BROOKFIELD, Wis. (AP) _ Officers in 15 squad cars searched for a bus on Interstate 94 after two people called to report they had noticed a passenger pointing a gun at the bus driver.

But after the bus was found and stopped Sunday afternoon, police who had feared a possible hijacking determined that the passenger only had a squirt gun. No citation was issued.

Officers said the calls tipping them came from two motorists who had passed the bus on the highway.