Christopher T. Williams is being held in the Ada County Jail on a felony aggravated battery charge after Boise police say he attacked another teen with a skateboard earlier this summer.

Police say the 18-year-old Williams hit the other teen in the face with the skateboard and broke his nose during an argument near the Fort Boise Skate Park in June. Police reports do not say what the argument was about or why it took Ada County prosecutors several months to issue an arrest warrant for Williams.

Prosecutors charged Williams with felony battery because of the severity of the injury suffered by the other teen.

Ada County Sheriff’s deputies also arrested a 26-year-old Boise man Wednesday for a different aggravated battery case from April.

Boise police say Jeffrey R. Van Nest Jr. got into a fight with a woman near the corner of 5th and Main streets around 2 a.m. on an unspecified day in April, where he kicked and punched her. That woman had to get surgery on her knee because of an injury she got in the fight, according to Boise police reports.

One of the reasons it took so long to charge Van Nest was that it took investigators some time to identify him as a suspect in the case, Boise police officials said Thursday.

It is unclear if Williams or Van Nest turned themselves in at the jail or if they were picked up by sheriff’s deputies.

Both men will make their initial court appearances Thursday afternoon.

The crime of aggravated battery is punishable by up to 15 years in prison.