UPDATED: Alberta's education minister and MLA candidate's door knocking turns into police investigation

EDMONTON - Thomas Lukaszuk, MLA candidate for Edmonton-Castle Downs and Alberta Education Minister, was campaigning in Edmonton's north-end Saturday afternoon, when he was allegedly assaulted.

The news of the alleged assault comes from PC party official Stephen Carter, who also sent out this tweet:

BREAKING: While door knocking, PC Candidate and Education Minister Thomas Lukaszuk was assaulted. Police on scene. #abvote#pcaa

— Stephen Carter (@carter_AB) April 7, 2012

The alleged attack happened in the area of 167 A Avenue and 98 Street.

Lukaszuk was later being interviewed by police at the scene. He says when he knocked on the door of the home in question, which has a Wildrose Party sign on the front lawn, the owner became very violent as soon as he saw Lukaszuk.

"He definitely punched me a number of times in my upper chest and in my shoulder and threatened to kick me in my croch number of times and threatened he will use more violence if I don't get off of his property, which I did immediately," Lukaszuk claims.

According to him, everything happened in about a minute.

But Al Michalchuk, who's accused of attacking Lukaszuk, is telling a different story.

The senior says Lukaszuk was on his doorstep for closer to 10 or 15 minutes.

"He kept refusing to leave and refusing to leave after repeated requests, 'oh I had to ask him atleast probably 6 or 8 times to leave and he wouldn't leave. He just kept hassling me and hassling me and finally I grabbed him by the sweater and turned him around and I said 'look, get off my property.'"

"'Well what are you mad at me for, why don't you like me,'" Al claims Lukaszuk was saying. "I said, 'I don't have to give you a reason, I want you off my property, period.'"

On Sunday, he showed Global News this security camera footage of the incident, which lasted under one minute:

Al admits to eventually giving Lukaszuk a push to get off his property. He also claims he had given Lukaszuk a trespassing notice during the last election - something Lukaszuk says he has no recollection of.

"Never have I seen anything as visceral as I have seen this time around and this is my fourth campaign running for myself...this is just shocking," Lukaszuk said on Saturday, also denying claims that he did anything to aggravate the senior.

Lukaszuk added that seeing a sign of the opposing party does not stop him from knocking on someone's door.

"Very often you knock on a door and the husband votes Liberal and the wife votes NDP or Conservative and both want signs...if I see an opposition sign I go to find out what it is that makes you unhappy with our policies."

"Any candidate should be able to knock on a door and either receive a positive and or negative response but verbal negative response. Hitting a candidate, and punching and pushing a candidate - inappropriate would be an understatement of the year," added Lukaszuk.

Despite being shocked by today's incident, Lukaszuk says he will be moving on with the campaign.

Michalchuk, meanwhile, has been told by police that assault charges against him are pending.

With files from Slav Kornik, Global News