Fredericton Canada shooting: Robb Costello and Sarah May Burns identified as two police officers killed with 48-year-old suspect in custody

At least four people, including two police officers have been killed in a shooting in the eastern Canadian city of Fredericton, with one person having taken into custody.

Police in Fredericton, a city of about 56,000 that is the capital of the province of New Brunswick, have a 48-year-old suspect in custody.

Fredericton's deputy police chief Martin Gaudet said the two the officers saw two deceased civilians before being shot and killed themselves. Police chief Leanne Fitch identified the two officers as Sara Burns, 43 and Robb Costello, 45. Ms Burns was married and had three children, and Mr Costello had a partner and four children.

The two other victims are yet to be identified.

"Awful news coming out of Fredericton," Canadian Prime Minister Justin Trudeau said on Twitter. "My heart goes out to everyone affected by this morning's shooting. We're following the situation closely."

Three Royal Canadian Mounted Police officers were killed and two more were wounded in 2014 in Moncton, New Brunswick, about 195 km (121 miles) from Fredericton, in one of the worst incidents of its kind in Canada.

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