A North Platte man accused of sexually assaulting two 15-year-old girls pleaded not guilty to all charges against him.

Johnathon Hernandez, 21, appeared in Lincoln County District Court for arraignment on Monday.

In February, North Platte Police were contacted by the parents of a 15-year-old girl who claimed Hernandez had sexually assaulted her.

Police launched an investigation , and determined that Hernandez had actually assaulted two teens on the evening of February 14, and again on the afternoon of February 15.

Prosecutors say one of the victims required medical treatment as a result of the assault.

Hernandez is charged with four counts of 1st degree sexual assault of a child.

He will back in court for a status hearing on May 12.