PLATTSMOUTH, Neb. (AP) — Classes in an eastern Nebraska district have been canceled after two threats of school attacks.

The first threat was reported in a joint statement Tuesday from Plattsmouth Community Schools and the Cass County Sheriff’s Office. The statement says investigators determined that a 15-year-old boy and a 16-year-old boy were planning an attack on Plattsmouth High School. The statement says “the weapon that they had intended to use has been accounted for and has been secured.” The two students remain in the custody of their parents and have been banned from school grounds.

Their names haven’t been released.

The district posted later Tuesday on its website that classes had been canceled Wednesday so authorities could investigate a second threat against the school.

UTICA, Neb. (AP) — Authorities blame speed and a slippery pavement for a collision between a pickup truck and a semitrailer that killed four people on Interstate 80 in eastern Nebraska.

The crash was reported around 7:15 a.m. Tuesday between the Waco and Utica exits, hampering westbound traffic.

Lt. Paul Vrbka with the York County Sheriff’s Department says the three males and one female killed were from Colorado. Their names aren’t being released until relatives have been notified of the deaths.

Vrbka says the eastbound pickup went out of control and crossed the median into the westbound lanes, striking the semitrailer and killing its four occupants. The big rig driver wasn’t injured.

Icy pavement played havoc with Tuesday’s morning commute in many parts of eastern Nebraska.

LINCOLN, Neb. (AP) — Lincoln police say an officer was injured during a struggle with a teenager outside a house party.

Police spokeswoman Angela Sands says officers sent to the party Saturday night found an estimated 150-200 people there. The teenager was found outside with bottles of alcohol in his pockets.

Sands says the officer tried to take the boy into custody, but he resisted, punching and elbowing the officer in the face several times.

The boy got away but was arrested later at his home. Police also cited the 17-year-old girl who was hosting the party at her home. Her parents were out of town.

BROWNVILLE, Neb. (AP) — The utility that owns Cooper Nuclear Station says the power plant adds $112 million a year to Nebraska’s economy.

The Nebraska Public Power District says that figure comes from a recent analysis done by the Nuclear Energy Institute.

Cooper employs 680 people, and 550 of those live near the power plant near Brownville, Nebraska.

Their salary and benefits are worth $76 million a year, and they help support more than 400 other jobs in the area.

Cooper generated more than 6.9 million megawatt hours of electricity last year while operating at 93 percent of its capacity.

OMAHA, Neb. (AP) — A pay raise is among the ideas being considered to help Douglas County keep enough officers to manage the growing number of inmates in its jail.

Douglas County Jail has just over 330 correctional officers but is authorized to have more than 370.

County Corrections Director Mark Foxall told the County Board that the jail is seeing a near-record level of inmates, and many have serious mental illnesses. The jail’s average daily population was 1,245 in January. All of the jail’s housing units are being used.

“If my population trend does not reverse, I’m going to run out of room,” Foxall said.

The circumstances have led to increasing mandatory overtime and difficult working conditions for officers, making it hard to keep employees, he said. Improving economic conditions also mean there’s a smaller pool of applicants willing to do the difficult work, he said.

“We are struggling with our staffing,” Foxall said.

Some County Board members said they’d considering raising pay to improve employee retention. They could consider raising taxes to avoid larger, more expensive problems at the jail, said board member Marc Kraft.

“One or two lawsuits could cost us millions of dollars,” Kraft said.

Douglas County pays beginning correctional officers $17.35 an hour, while neighboring Pottawattamie County pays $20.94 an hour.

The county also needs to investigate why jail numbers are rising and find solutions for the rising numbers, said Board Chairman Chris Rodgers. Such solutions could include cutting down the time people spend in jail while awaiting trial and redirecting people with mental health issues to other facilities.

Two probation officers now have an office in the jail, Foxall said. It should allow for presentence investigations to be processed quickly and allow more inmates to meet with probation officers before leaving jail so they have a better understanding of their probation terms.

LINCOLN, Neb. (AP) — Officials say a fire at the historic Terminal Building in downtown Lincoln did serious damage to offices of Legal Aid of Nebraska.

No one was inside the building when the fire was reported early Monday. One firefighter was treated and released at a hospital. No other injuries were reported.

Legal Aid of Nebraska executive director Milo Mumgaard says the organization’s eight-floor offices sustained considerable damage. The Nebraska Department of Insurance is moving temporarily to the State Office Building.

The fire cause is being investigated.

Lincoln Battalion Chief Leo Benes said there was heat and smoke damage on the ninth and 10th floors and water damage on the sixth and seventh floors.

The building was built in 1916 and is on the National Register of Historic Places.

OMAHA, Neb. (AP) — A planned community solar project could allow for Omaha Public Power District customers to mostly power their homes and businesses with renewable energy.

The district expects more than 50 percent of its retail electricity sales to be from renewable resources by 2020, the Omaha World-Herald reported. Most of the energy would be generated by solar panels and wind turbines.

The district used coal for about 70 percent of the electricity it generated last year. The share was higher than normal because the utility shut down a nuclear plant in November 2016.

Those interested in getting involved in the project could offset up to 50 percent of their annual electricity consumption with shares purchased in the project.

“When you pair the district’s supply-side suite of energy generators with someone who wants to go up to 50 percent participation in a community solar program, they would at that point achieve 100 percent renewable energy designation on an annual basis,” Brad Underwood, the power district’s director of corporate planning and analysis, told the utility’s board of directors.

District officials said they likely won’t award a construction contract for the project until April or May. The utility wants to gage how much interest potential participants will have in different rate structures before deciding how large the solar project will be.

Fremont saw so much interest in its community solar project that its final installation was more than three times the size of the original proposal. About 200 Fremont residents and businesses purchases shares in the 1.55-megawatt project in seven weeks.

OMAHA, Neb. (AP) — A 14-year-old girl has been arrested as a suspect in the death of a 48-year-old man who was found dead in his home in northeast Omaha.

Omaha Police said Sunday that the girl had been arrested on suspicion of criminal homicide and taken to the Douglas County Youth Detention Center.

A friend discovered Montrel Williams’ body Saturday morning.

Police did not immediately release details of how he died.

LINCOLN, Neb. (AP) — An Omaha man has been accused of raping a prostitute in Lincoln.

25-year-old Ray Ryan was taken into custody Friday. Court records say he’s charged with forcible sexual assault. The records don’t list the name of an attorney who could comment for him.

A court document says Ryan terrorized women after enticing them to meeting him for paid sex. The woman involved in the case that led to the charge says he threatened her with a knife on Dec. 5, 2016, after arriving at an apartment for sex.

Investigators say they’ve learned at least three other women who may have had similar encounters with Ryan.

OMAHA, Neb. (AP) — A 13-year-old student has been arrested in western Omaha, accused of making terroristic threats against a school.

The Douglas County Sheriff’s Office says in a news release that the Elkhorn Valley View Middle School student was arrested Wednesday after making a threat on a national social media gaming website. Officials say on Thursday, deputies learned that the same juvenile made a similar threat on another social media platform

Officials say the threats were not specific but did reference a school shooting.

The name of the juvenile is not being released.