Updated

Family and friends say they are stunned a Utah police officer shot and killed his wife, mother-in-law and two young children before turning the gun on himself.

At a vigil Saturday night in Spanish Fork, they said they were aware Joshua and Kelly Boren had been having marital problems but never thought he was capable of such a violent act.

Authorities say 34-year-old Lindon Officer Joshua Boren shot his 32-year-old wife; his 55-year-old mother-in-law, Marie King; and his two children, 7-year-old Joshua "Jaden" and 5-year-old Haley before killing himself.

They were found dead in their home late Thursday.

The Deseret News reports (http://bit.ly/1eL1cwI ) more than 100 people packed a gym to remember and share stories of the family. Friend RiRi Whiting says she never saw a temper in Joshua Boren.

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Information from: Deseret News, http://www.deseretnews.com