The accused have been identified as Isaiah Williams, 24, Cordero Hodge, 22, and Jamell Pierce, 22, from New Jersey.
All of them have been charged by the Gloucester county prosecutor's office for murdering Surinder Singh, the South Jersey Times reported yesterday.
Singh, 40, a gas station attendant at Garden State Fuel in Woodbury, was shot in the upper chest and near his right armpit on August 25.
He is survived by his wife and two children and had been living in Woodbury for about 10 years.
A memorial has been built in Singh's name at the gas station where he worked.
Authorities, however, later confirmed that nothing was stolen during the robbery bid.