Officials at Edmonton Institution say convicted triple murderer Douglas Garland was taken to hospital after he was found injured in his cell on Monday night.

Garland was found guilty of three counts of first-degree murder in the deaths of Alvin and Kathy Liknes and Nathan O’Brien in 2014 and was sentenced to life in prison with no chance of parole for 75 years.

He was sent to the maximum security prison in Edmonton following the trial and a correction official says he was discovered in his cell at about 9:10 p.m.

"I can confirm that an inmate was assaulted at Edmonton Institution yesterday around 2110," said Matt James, Assistant Warden Operations, Edmonton Institution.

Garland was taken to hospital but there is no word yet on his condition.

"It was serious enough that he had to be admitted," said James. "I can say that the inmate who was assaulted was admitted to hospital last night.'

This is the second time Garland has been attacked while incarcerated.

Just hours after he was sentenced, he was attacked and beaten by four inmates in the Calgary Remand Centre.

"We're looking into the incident right now. One of the things that we need to focus on is that we don't tolerate any violence in our institutions," said James.

James says they are reviewing video footage and are working to identify those responsible for this latest attack.