Police are investigating a third Los Angeles medical marijuana dispensary shooting.
An employee at a Northridge dispensary was shot in the face and critically wounded during a robbery Saturday night. The gunmen escaped with $11,000.
Three days earlier, two people were shot to death and another was wounded at pot dispensaries in Hollywood and Echo Park.
Police Capt. Kevin McClure says there doesn't appear to be any connection in the San Fernando Valley case and Thursday's shootings, but he notes it appears to be what he calls "a disturbing pattern."
Copyright 2010 The Associated Press.