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.

Original story:

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: