A new video has been posted showing Calgary police officers physically removing two football fans from their seats at McMahon Stadium during the Stampeders game Saturday against the Saskatchewan Roughriders.

During the altercation, beer cans can be seen hitting officers trying to subdue two men who appear to be resisting.

Although the incident wasn't as serious as a similar altercation caught on video in 2008, when an officer was attacked by a fan, the video highlights the need for fans to co-operate with officers and security staff, said Sgt. Lee Stanton.

"When you're tapped on the shoulder by an officer, you need to follow him so the appropriate discussion can take place," said Stanton, who regularly supervises officers at Stamps games.

The video shows four fans being targeted.

The first two left peacefully with an officer and were allowed to return to their seats when it turned out they were misidentified, said Stanton.

A third fan, seated and wearing a red T-shirt, is seen brushing an officer's hand off his shoulder. He had to be physically removed with the help of another officer when he wouldn't co-operate.

"He had allegedly thrown a beer can on the field or at someone," said Stanton.

While he was being removed, a fourth fan appeared to be pushed and then confronted the officer. He was also removed.

"I have no doubts that the officers involved acted appropriately," said Stanton. "I have no concerns about the officers' conduct during this event."

Stadium manager John Haverstock said he believed the officers in the video acted appropriately. "We have zero-tolerance for throwing projectiles," said Haverstock. "You're gone, that's it. And it appeared he wasn't going to go."

Security and police presence was beefed up by 20 per cent for the game for a total complement of 300 patrolling the entrances and stands at the stadium.

A sold-out crowd of more than 35,000 fans attended the game with roughly half cheering for the visiting Roughriders.

"Each game has it's own issues, and the makeup of the crowd plays a factor, as does alcohol consumption," said Stanton. "But the numbers (of ejections) were fairly consistent with what we usually see."

Although some media reports put the number of ejections at up to 20, Stanton wouldn't say how many fans were removed from the stadium.

A small number did have to spend the night in custody for public intoxication, he said.

Police and the McMahon Stadium Society plan to increase the security presence again for the Labour Day Classic against the Edmonton Eskimos.