A police memo appears to outline a game in which officers in a Los Angeles suburb competed to write tickets, impound vehicles and arrest drivers in the city of Bell, where the department is under federal investigation for overzealous motorist prosecution.

The Los Angeles Times reported Monday that the memo _ entitled "Bell Police Department Baseball Game" _ assigns "singles" for parking tickets, "doubles" for vehicle impounds and "home runs" for felony arrests.

The memo is the first evidence that Bell police were engaged in an effort to go after motorists. The Justice Department is investigating claims police were told to write tickets to drum up revenue for the city, which was paying exorbitant salaries to its officials.

The Times says department superiors quashed the memo when it circulated several years ago.