Police in Delaware arrested a man in possession of an illegal machine gun and a notebook detailing plans for "urban warfare," "martyrdom" and at least one named target, according to federal officials and court documents.

Luqmaan Khan, a Pakistan-born U.S. citizen, was arrested on Nov. 24 after police approached him in his vehicle for being in a New Castle, Delaware, park after hours. According to federal court filings, Khan refused to comply with officers and was arrested.

Police who searched Khan’s Toyota Tacoma found a backpack that contained a Glock handgun, a machine gun conversion switch, body armor and "ambush" and "surprise attack" plans written in a marble composition notebook.

Khan, 25, told FBI investigators that martyrdom is "one of the greatest things you can do" and "a goal," according to court filings.

The notebook refers to martyrdom repeatedly and contains plans to target a member of the University of Delaware campus police as well as a map labeled "UD Police Station." Khan is a former student who attended the university.