Two RCMP officers were shot and wounded at a rural residence in Alberta on Tuesday.
They were taken to hospital for treatment. Their condition wasn't released.
RCMP said they were looking for an armed suspect. Premier Alison Redford, who was briefed by the solicitor general, said one person was in custody.
Darcy Eskra, deputy mayor of Killam, said he was told a second suspect in the shooting was dead.
The RCMP emergency response team and RCMP air services were dispatched to the scene between Lougheed and Sedgewick, about 160 kilometres from Edmonton.
The injured officers are from the nearby Killam detachment.
It was the second time in recent days that Mounties were seen searching the area.
Sonny Losness, deputy mayor of Lougheed, said RCMP officers, including a police tactical squad, responded to reports of a domestic dispute involving a man who lives in a trailer near the community.
"Last week, there were a lot of cops around. There was a young fellow south of town involved in a domestic dispute with his wife, but I don't think they caught up with him," said Losness.
"This was south of Lougheed. They had the SWAT team down there. He was living in a fifth-wheel trailer near a gravel pit with a lady who has a kid."
STARS air ambulance confirmed it sent two helicopters - one from Edmonton and one from Calgary. Spokesman Cam Heke said the two officers were transported to hospital in Edmonton.
The area features rolling farmland and oil and natural gas development.
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