The 23-year-old man left a Pathmark in Old Bridge Township around 3:30 a.m. and returned a half-hour later with a handgun and an AK-47 assault rifle, Middlesex County Prosecutor Bruce Kaplan said.
The man fired the rifle at the first workers he saw, killing an 18-year-old woman and a 24-year-old man as other workers hid, Kaplan said. At least 16 rounds were fired, some breaking the front windows.
He then killed himself, said Kaplan, who did not release the name of the gunman or either victim. The motive is under investigation.
Police at the scene were keeping onlookers well away from the store Friday morning. A number of vehicles were in the parking lot outside, along with police vehicles.
The store and its parking lot were closed. Pathmark officials had no immediate comment.
Old Bridge is a bedroom community of about 65,000 just across the Raritan Bay from New York City's Staten Island borough.
New Jersey Transit closed its nearby park-and-ride lot and told riders that they could park in other park-and-ride lots or could ride a different rail line.
http://accesswdun.com/article/2012/8/252364