Twenty-three-year-old Grant Franklin remained hospitalized Sunday. He faces four counts of attempted murder and several weapons charges.
A string of shootings have left four people dead and eight wounded in Newark over the weekend.
Police said the wounded officer was shot in the shoulder when four men tried to rob the business. The officer worked for the Triborough Bridge and Tunnel Authority. He was hospitalized in stable condition.
Another victim, a 30-year-old man, was discovered a few blocks away with a gunshot wound to the leg. He was taken to Harlem Hospital, where he was listen in stable condition.
At least one person was wounded when shots rang out at Vine Street and Newcomb Place.
Seven people have been wounded during a series of weekend shootings in Newark.
But no fatalities were reported.