Investigators have found 90-day visas, maps, cell phones and computers inside a recreational vehicle that may have been rented by five foreign nationals arrested after a break-in at a county courthouse in San Antonio.

Sheriff's department spokesman Louis Antu (AN'-too) says local and federal authorities are investigating the early Wednesday burglary at the old Bexar (bayr) County Courthouse.

Antu says the men are all in their 20s and were unarmed when they were arrested about 1:30 a.m. Three of the men were caught inside while the other two were outside near the RV.

Antu says he has no information to indicate the break-in is related to terrorism. He says federal authorities are involved because the men aren't from the U.S. and authorities still are trying to confirm their nationalities.