A group called the Overpass Light Brigade hold a sign as they gather during a vigil at Cathedral Square to honour victims of Oak Creek in downtown Milwaukee, Wisconsin. Reuters/Allen Fredrickson
A manhunt has been launched to nab the assailant, police said.
The death of another Sikh has sent shock
waves among the Sikh community members in Washington, even though the police have termed it as a robbery incident and ruled out any link to the August 5 shootout inside the Oak Creek Gurdwara that killed six Sikh worshippers.
The deceased Dalbir Singh, 56, assisted his nephew Jatinder Singh in running a grocery store in Milwaukee city, Wisconsin.
The incident happened Wednesday night when some unidentified men entered the shop and put a gun to Jatinder Singh head.
Jatinder Singh said he and his uncle made it back into the store and pushed the side door shut, the Milwaukee Journal Sentinel reported.
But one of the men fired a shot through the door, killing Dalbir Singh, it said.
Dalbir Singh was a regular visitor to the Gurdwara in Oak Creek, but was not present when the tragic incident happened on August 5.
Jatinder Singh had gone to the Gurdwara, but had left its premises before the shootout began.