Det Ch Insp Allam Bhangoo said it was a “shocking incident”.
“Our thoughts at this time are with both victims and their loved ones, who are being supported by specialist officers,” he added.
“Our enquiries are in the early stages but we do not believe there to be any wider threat to the public. However, we are keen to hear from anyone who may have seen anything or who has any information that could assist our investigation.
“We know this incident will have caused significant concern in the community and residents can expect to see an increased police presence in the area over the coming days.”
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