SACRAMENTO (CBS13) – A reward being offered to help find the person responsible for killing two elderly Sikh men has jumped to $57,000.

It’s been seven months since the men were killed while walking in an Elk Grove neighborhood and still no arrests have been made.

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Surinder Singh was 65-years-old and died that day.

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Gurmej Atwal was 78-years-old. He died six weeks after the shooting.

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On Sunday, volunteers posted new reward signs around the city to try and raise awareness of the crime.