Australian police arrested four people this morning (Wednesday) over the murder of a civilian police worker, Associated Press reports. Officials say that the killing was a terror act.
The worker, Curtis Cheng, was murdered last Friday by a 15-year-old Iranian youth who himself was shot and killed at the scene of the crime. The murderer's alleged accomplices, all between the ages of 16 and 22, were arrested today.
Police still do not know why Cheng was killed, or whether he was personally targeted.