Authorities today announced a $10,000 reward for information that helps them find out who took 31 firearms from a vault in the old Compton City Hall building, where they were being stored following the disbanding nearly 20 years ago of the city's police department. Investigators believe the firearms were taken some time between March 6 and Aug. 31, 2017, according to the Bureau of Alcohol, Tobacco, Firearms and Explosives.