A 27-year-old man who was filling in for the owner at a small north Surrey convenience store was shot and killed on Christmas Day.

Alok Gupta was manning the till at Ken's Grocery, near 117B Street and 96 Avenue in Surrey, at around 4 p.m. PT Sunday when someone shot him, police said.

Paramedics found Gupta unconscious and made every effort to revive him, but he succumbed to his injuries.

Gupta became Surrey's 30th homicide of 2011.

RCMP Sgt. Jennifer Pound said Gupta was simply doing a favour for the store's owners when he was killed.

"The victim of this homicide was working Christmas Day as a good deed to the owners who wished to celebrate Christmas together," RCMP Sgt. Jennifer Pound said.

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The Integrated Homicide Investigation Team is canvassing the mostly-residential area. (Ben Hadaway/CBC)

"It’s beyond a tragedy when a good deed turns into the loss of someone’s life."

The Integrated Homicide Investigation Team began canvassing the mostly-residential area — which is split between Surrey and North Delta along 96th Avenue — for anyone who may have seen or heard anything.

Surrey's third Christmas shooting

The convenience store attack on Gupta was the third shooting in Surrey over the Christmas weekend.

Early Sunday morning, a 54-year-old woman was shot in Whalley.

Police released few details about the incident, which took place in an apartment on King George Boulevard near 132 Street, but said the woman's injuries were not life-threatening and she is recovering in hospital.

Early Saturday morning, a 28-year-old man died after being shot at a house party in Newton.

No arrests have been made in that case, and police have not released the name of the victim.

Police are also uncertain whether the man died from the gunshot wounds, and an autopsy has been scheduled.

Investigators are seeking witnesses in all three incidents.

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With files from the CBC's Ben Hadaway