Government Pensions

The Washington Post reports that a local police officer has been convicted of shooting and killing an unarmed furniture deliveryman.  The judge handed down a sentence of 45 years imprisonment.  But get this:

His disability benefits and police pension are not affected by his convictions, county spokesman John Erzen said.

So taxpayers must keep paying this guy's pension?  Good grief.  Are there any circumstances in which a government employee's pension can be canceled?