The Austin ISD Public Information Officer says a call was made to AISD on Monday morning about a possible gun on a school bus.
AISD Police contacted APD and the school bus was stopped on Barton Springs between S. 1st and Lamar Blvd.
Police evacuated the students from the bus and a search occurred.
A wooden rifle belonging to a ROTC student was found.
The students were allowed to get back on the bus and continue to school.
Authorities are reporting that the investigation is over.