Ron Cyr, who is one of three men accused of first degree murder in the shooting death of his wife, says he was acting when he discussed the killing with an undercover officer.

Cyr, Zdenek ‘Dennis' Zvolensky and Nashat Qahwash are each charged with first degree murder in the February 2009 shooting death of Nadia Gehl.

Cyr returned to the stand Thursday, a day after telling the court he was just playing the role of the mastermind because of relentless blackmailing by the co-accused.

Also on Wednesday, he again told the court other two men are the real killers.

Earlier in the case the undercover officer testified that he pretended to have a meddling ex-wife he wanted out of his life and played up is interest in their business venture.

But Cyr claimed he was trying to get the undercover officer, who he thought was his friend, to help get the murder weapon away from Zvolensky.

Cyr said he felt bad introducing the undercover officer to Zvolensky and "bringing him into a circle of murderers."

When Zvolensky allegedly offered to kill the undercover officer's ex-wife, Cyr told the court he felt betrayed.

On Thursday, Cyr's defence attorney also asked him about testimony from the undercover officer about a conversation the two had in August 2009, days before Cyr's arrest.

In the conversation, the officer brought up Gehl's murder and asked Cyr what the last straw was, to which Cyr responded that there were a lot of last straws.

On the stand Cyr answered that at the time he couldn't think of anything else to say.

Regarding the fact that in earlier testimony the officer said Cyr never talked about Gehl, Cyr replied he didn't think he had a right to talk about her and felt responsible for her murder.