HELENA, Mont. (AP) — Federal agents found homemade bombs in the Montana home of a man they suspect is the "AK-47 Bandit," who is wanted for a string of bank robberies and is accused of shooting at a Kansas state trooper, according to authorities and court documents filed Monday.

FBI agents were tipped off when Richard Gathercole, 39, called his mother from a Nebraska jail following his arrest in the attempted shooting of the trooper who was trying to pull him over on Interstate 70 last week, according to a search warrant application to a federal judge. The trooper wasn't injured.

According to...