Hackers have launched another attack on a transport agency that cut off mobile phone services at San Francisco stations last week to prevent protests.
Hacking group Anonymous announced on Twitter that the private data of 102 Bay Area Rapid Transit (Bart) police officers had been leaked.
The group claimed responsibility on Monday for disabling Bart's marketing website, myBART.org.
Bart police have been criticised for shooting dead a homeless man in July.
Officers said the man lunged at them with a knife, but the killing has caused public anger. (more)