A report that Canadian fighter jets were responsible for civilian casualties in Iraq was determined to be “not credible” after an evaluation by the Coalition military officials at U.S. Central Command and the Canadian Forces.

Senior Canadian Forces officials gave CTV News Channel’s Parliamentary Reporter Mercedes Stephenson a number of new details Thursday about why they believe no civilians were killed in the Jan. 21 airstrike.

The officials said that an unidentified person phoned someone affiliated with the Kurdish Peshmerga and reported hearing that that up to 27 civilians had been killed. That person did not claim to have witnessed any casualties.

Both the coalition and Canadian Forces opted to evaluate the claim, however.

The area in question, near Mosul, was bombed by coalition forces, including Canadians CF-18s, after Peshmerga forces facing ISIS sniper fire had called for help.

The area had been under surveillance from Jan. 2 and it was described as a “heavily fortified” ISIS defensive position on the frontlines. Senior military officials say during the nearly three weeks of coalition surveillance, no evidence of civilian presence could be found. Officials believe civilians had fled the area the year before due to heavy fighting. The only people coalition intelligence spotted entering and leaving the isolated compound were male and took up active fighting positions. There was no evidence of women or children, or signs of civilian life like cooking, laundry, women or children.

After receiving the report of civilian deaths, the Canadian and Coalition officials checked with Iraqi government officials, who said they had received no reports of civilians killed.

Meanwhile, no one came forward to report family members had been killed.

On top of that, ISIS did not report any civilians killed, but the group frequently capitalizes on alleged civilian casualties.

Fighter jet footage was reviewed frame-by-frame, and no evidence of civilian casualties was seen on the footage, officials added.

After reviewing intelligence, combat footage and speaking with local authorities, military officials determined there was no evidence to back up the initial report, and no investigation was launched, they said. Canadian officials say if new information comes to light, they would look into the allegations again.

Commander Kyle Reins at US Central Command confirmed to CTV that the Coalition looked into the allegations and found the claims were not credible.