OXNARD, Calif. (AP) — A Southern California commuter train slammed into a truck abandoned on the tracks early Tuesday, sending three rail cars tumbling onto their sides and injuring 28 people in the fiery crash.

The accident occurred around 5:45 a.m. in Oxnard, about 65 miles northwest of Los Angeles. Four people, including the train engineer, had critical injuries.

The truck driver was found several miles away, and authorities are questioning him about why the vehicle was left on the tracks.

Little was left of the truck except scorched and mangled wreckage, with some debris found in a nearby intersection and some close to the tracks.

The Metrolink train carrying 48 passengers and three crew members was heading from Ventura County to Los Angeles. The injured people were taken to several hospitals.

ATLANTA (AP) — A federal appeals court in Atlanta is considering whether investigators must obtain a search warrant to obtain cellphone tower tracking data.

A three-judge panel of the 11th U.S. Circuit Court of Appeals in June ruled investigators must get a search warrant to get the data, which is widely used to show suspects were in the vicinity of a crime.

The federal government asked to have the decision reconsidered by the full court and oral arguments were held Tuesday.

The issue arises from a Miami case in which federal prosecutors used a court order to get cellphone tower data over a 67-day period for Quartavious Davis, a suspect in a string of robberies. A defense attorney argued prosecutors should have gotten a warrant, which has a higher burden of proof.

DETROIT (AP) — Buick is the first U.S.-based automotive brand to crack the top 10 in Consumer Reports magazine’s annual brand report cards.

U.S. automakers also placed three vehicles on the magazine’s list of “top picks” for vehicles, the first time that’s happened in 17 years. The rankings were unveiled Tuesday in the magazine’s annual auto issue.

But the brand rankings and top picks still were dominated by Japanese and German manufacturers, with Lexus, Mazda, Toyota, Audi and Subaru taking the top five brand spots.

Buick, made by General Motors, placed seventh in the brand rankings.

NEW YORK (AP) — Lovers of emoji, the cute graphics that punctuate online writing and texts, will soon be able to pick from different skin tones.

IPhone and iPad maker Apple Inc. has incorporated more diverse emoji into the developer version of the latest update to its mobile operating system. It has not said when the update will be available for all users.

Currently almost all the emojis depicting people or body parts such as a fist or bicep look white.

An Apple spokeswoman says the company is working with the Unicode Consortium, the nonprofit organization that sets the standards for the pictograms, “to update the standard so that it better represents diversity for all of us.”

Unicode last fall proposed adding five new skin color options for emoji.

MATAMORAS, Pa. (AP) — Police say an 82-year-old man fatally shot his son in the head during a fight before committing suicide at their Pennsylvania home.

Police tell say Joseph Matrongolo fired multiple shots at his son during an argument at around 8 p.m. Sunday at their Westfall Township home.

One of the shots struck Matrongolo’s son, who is also named Joseph.

Police say the elder Matrongolo then turned the gun on himself.

Westfall Township is located in the Pocono Mountains on Pennsylvania’s border with New York and New Jersey.

The investigation is continuing.

DETROIT (AP) — The death toll from crashes involving General Motors cars with defective ignition switches has climbed to 57.

The total is one more than last week. It was posted Monday on an Internet site by compensation expert Kenneth Feinberg.

Feinberg and aides are checking claims filed or postmarked before a Jan. 31 deadline to determine which are eligible for compensation. Each eligible death claim is worth at least $1 million under his guidelines. Feinberg was hired by GM to make payments.

As of Friday, he received 479 death claims and 3,866 injury claims. Of the injury claims, 94 will get compensation, up from 87 a week ago.

Feinberg has received a total of 4,345 claims. Of those, 666 were deemed ineligible, while Feinberg is reviewing or seeking documents for the rest.

CLEARFIELD, Pa. (AP) — A prosecutor says an inmate killed his cellmate at a Pennsylvania prison because he wanted his own private cell.

Forty-five-year-old Lawrence Peterson Jr., formerly of Easton, will now serve a life sentence on top of the 40- to 80-year term he had been serving for a violent robbery.

Clearfield County District Attorney Bill Shaw planned to pursue the death penalty but decided to skip the trial after Peterson said Friday he was willing to plead guilty to first-degree murder and take a life sentence for the Aug. 2, 2013, beating of 59-year-old William Keitel.

Keitel died in the infirmary at the state prison in Houtzdale nine days later.

Shaw says it would have been a “terrible waste of tax dollars” to push for a trial.

WASHINGTON (AP) — America’s biggest tobacco companies say they’re ready and willing to pass along factual public health information about cigarettes.

But they say they won’t go along with being forced to underwrite an ad campaign that would have the companies brand themselves as liars.

In 2006, a federal judge in Washington ordered the cigarette makers to admit publicly that they had lied for decades about the dangers of smoking.

The companies are heading to an appeals court on Monday to argue that those ads should be set aside and new ones put in their place.

The preamble to the ads says a federal court ruled that the companies “deliberately deceived the American public.”

The companies say the statement is overbroad and misleading.

KALAMA, Wash. (AP) — The Cowlitz County Sheriff’s Office says a man struck and killed by a train south of Kalama was posing for a photograph at the time.

The man had been driving from Tacoma to Portland, Oregon, on Saturday morning when he and his female traveling companion stopped to smoke a cigarette and take pictures along the Columbia River.

The man was posing between two railroad tracks while a northbound BNSF freight train was approaching. Investigators say he apparently did not see an approaching Amtrak passenger train coming from the other direction.

The victim’s identity has not been released. His companion was not injured.

LAKE OSWEGO, Ore. (AP) — One is a businesswoman and an MBA graduate. Another is a corporate vice president. The third is a registered nurse.

These three mothers — all of them educated, middle-class professionals — are among the vaccine skeptics who have been widely ridiculed since more than 100 people fell ill in a measles outbreak traced to Disneyland.

The backlash has been so severe that dozens of anti-vaccine parents contacted by The Associated Press were afraid to speak out. But a handful of mothers agreed to discuss their thinking.

Michelle Moore is a businesswoman who lives in the Portland suburb of Lake Oswego, Oregon, with her 2½-year-old twin girls. She says vaccines have a place, but she regards them as a medical choice that should be researched carefully.