Ex-Marine tweeted about killing co-workers in ’09

23-year-old gunman, Terence Tyler,  killed two co-workers early Friday at a Pathmark supermarket in Old Bridge, New Jersey, and then shot himself to death, Middlesex County Prosecutor Bruce J. Kaplan said.

The shooter wielded an AK-47 assault rifle and a handgun, and was carrying multiple ammunition magazines, he added.

“I believe everyone in the store was a target,” said Kaplan, who noted that the gunman fired 16 rounds during his attack. The gunman killed an 18-year-old woman and a 24-year-old man, and may have opened fire just before he walked into the store, he said, citing broken glass in front.

Tyler was discharged from the Marines in 2010, nearly two years in the service at Twentynine Palms, Calif., according to the Marines. The infantryman from New York City never served overseas, said Marine spokeswoman Capt. Kendra Motz. She wouldn’t comment on the circumstances of his discharge.

Tyler’s Twitter account, which has a photograph identified by family members as Tyler, interspersed posts about hating Marine life, expressions of violence, and his take on football, movies, women and other interests.

“smh is it normal to want to kill ALL of ur coworkers?Maybe but I’m actually in a position where I can,smh,” he wrote in June 2009, using the handle (at)Tylerbkstyle and the abbreviation “smh” for “shaking my head.”

Tyler tweeted months later about killing.

“I’m starting to see why plp go on killin sprees,” he wrote. And these (obscenity) are reeeeeeally pushin my kill everyone I see button.”

At the top of Tyler’s Facebook page was the motto: “Be optimistic. All the people you hate are going to eventually die.” Associated Press writers Alex Katz in New York City, Geoff Mulvihill and Larry Rosenthal in Trenton, and Julio Cortez in Old Bridge also contributed to this report.