Halton police have determined the deaths of a married couple to be a case of murder-suicide. Prem Singh and his wife Jan Singh, aged 69 and 70, were found dead in their home at 1414 Summerhill Cres. in northeast Oakville on Wednesday morning. At the time, authorities said a gun was found in the home and there were no outstanding suspects. In a statement released Friday afternoon, Halton Regional Police said they've determined that Prem Singh shot his wife before shooting himself. They say the two were the sole residents of the home. A neighbour said the couple had lived in the home for more than 20 years.