This is a breaking news story. Check back for updates.
UPDATE 12:20 p.m. EST: Peter Moreno, a Twitter user whose profile says he is a retired New York Police Department captain and a public safety expert, tweeted that the shooting actually occurred outside the station. Shots were fired during an attempted carjacking and the suspects fled into the station, he said.
Train traffic was stopped inside a New Jersey transit station amid a report of shots fired inside the station at Bloomfield Avenue and North 3rd Street in Newark, the breaking news Twitter account @PzFeed reported Monday morning:
BREAKING NEWS: Shots fired inside New Jersey transit station at Bloomfield Av & North 3rd St. Train traffic being stopped.
â€” PzFeed Top News (@PzFeed) December 23, 2013