EDMONTON -- A man has been charged after staff say someone phoned the legislature office of Alberta Environment Minister Shannon Phillips and threatened to shoot everyone over the carbon tax.

Michael Enright, an oil products salesman from Camrose, says he didn't make any threats and was simply calling to voice his frustration over the hurt currently being experienced in his industry.

"This was nothing. This was me having a bad day," Enright said when contacted by The Canadian Press on Thursday. "I'm a very calm person. Everybody knows me as a guy who never gets upset."

Cheryl Sheppard of the Edmonton Police Service said Enright faces one Criminal Code charge of uttering threats.

The call happened a week ago, on March 31, in the middle of the afternoon.

"He was calling to express his anger over the carbon tax," a staffer in Phillips's office told police in a statement.

The staffer told police the caller, who refused to identify himself, referred to the minister as a man. When he was reminded Phillips was female, "he told me the NDP only hire people with boobs, not qualified people."

"He then said he was going to get his ammunition and gun and come here and shoot us all," the statement reads.

Sheppard said Enright was charged later that day with assistance from police in Camrose.

Enright said Thursday he has not been in court yet.

He denied making any threats.

"No, I didn't say that. I don't have a gun. I don't have ammunition. I didn't say that at all."

Enright said he was driving and listening to talk radio host Danielle Smith, former Opposition Wildrose leader in the legislature, when he called Phillips's office.

"I'm listening to Danielle Smith talking just one thing after another about -- whatchamacallit -- the economy and the coal. I've got friends who are losing their jobs, and I phoned in," he said.

"I didn't mean to get upset and I did not threaten anybody at all. All I said was that if they (the NDP government) keep pushing people, people are going to get guns and they are going to revolt.

"I was talking globally, not specifically. I would never, never, ever threaten anybody. I've never hurt anybody. I don't even have a speeding ticket."

Enright said the whole thing has been blown out of proportion.

"I feel terrible that the person on the other end actually felt threatened by me."

He said if he thought it would make amends, he would write the office an apology letter and do even more for the female staff member with whom he spoke on the phone.

"When this is all done, I'm going to send her flowers."

At the legislature, Phillips told reporters, "In my view these things are unlawful and need to be treated as such. If you're uttering threats, you're breaking the law."

"I've actually distanced myself a lot from social media because of some of the level of rhetoric coming from all kinds of people, mostly men," she said.

The maximum penalty for uttering threats is five years in prison. None of the accusations has been proven in court.

Premier Rachel Notley and other members of her cabinet have been the target of threats in recent months, but there have been no reports of any charges.

The threats spiked last December when Notley's government passed legislation mandating safety rules on farms.

Energy Minister Marg McCuaig-Boyd tearfully recounted in the legislature that she had been harassed and threatened over the farm bill.

The carbon tax, set to begin on Jan. 1, will increase the cost of everything from gas at the pumps to home heating and electricity.

The province is also moving to shut down all coal-fired electricity plants by 2030.