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THE COLONY (CBSDFW.COM) — A large turnout at the candlelight vigil was held Sunday night for the owner of a convenience store in The Colony.

The emotional event was held at Rapido Gas Station, where 31-year-old Samira Siwakoti -- a wife and mother of two -- was murdered Wednesday.

Though police have received 125 tips on the case, the suspected killer remains at large. He was caught on the store's surveillance video; police say the suspect robbed Siwakoti and used a revolver to shoot her in the face, "I've been doing this for about 25 years and I would say this is probably the most heinous act I've seen," said Lt. Darren Brockway of The Colony Police Department.

Investigators believe the suspect to be about 25-years-old, and that he may have had help during the crime. The suspect fled in a four-door black vehicle with temporary tags -- in the broad daylight.

Anyone with information on the suspect is asked to call The Colony Police Department: 972-625-1887.

Oak Farms Dairy is offering a $10,000 reward for information that leads to an arrest.

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