A fully automatic assault rifle was among the items police seized during a drug investigation in Calgary last week.

The joint investigation between city police and the Alberta Law Enforcement Response Teams culminated March 22 when they carried out two search warrants in Kensington and Panorama Hills.

Investigators found an AK-47 with 48 rounds of ammunition, more than $23,000 in cash, and $57,000 in cocaine, methamphetamine and heroin.

"Clearly a firearm like this in the hands of a suspected drug dealer is a considerable public safety risk," said ALERT Staff Sgt. Keith Hurley.

"Guns are used in the drug traffic trade for protection, intimidation, and retaliation."

A look at the AK-47 seized in <a href="https://twitter.com/hashtag/yyc?src=hash">#yyc</a> drug arrest <a href="https://t.co/JOMV2RSYxH">https://t.co/JOMV2RSYxH</a> —@ALERT_AB

"ALERT has seized 125 guns this past year, but this one probably concerns me the most," continued Hurley.

"I do not have the benefit of knowing the gun's history or predicting how it may have been used, but it is capable of producing extreme violence."

Here's what else police seized:

229 grams of cocaine

35 grams of methamphetamine

69 grams of heroin

1,404 grams of Benzocaine cutting agent

$23,450 cash proceeds of crime

Packaging materials, digital scales, score sheets, and other drug trafficking paraphernalia

One person has been arrested and charged with 15 offences:

Three counts of possession for the purpose of trafficking

Production of cocaine

Possession of proceeds of crime

Careless use of firearm

Unauthorized possession of firearm

Three counts of unauthorized possession of weapon

Four counts of possession of a weapon contrary to prohibition order

Possession of a prohibited weapon with ammunition.

Hurley said the accused has a "significant history" with the police and it's likely there was more than one person involved in the suspected drug activity.

Forensics and ballistics teams will analyze the AK-47 to determine if it was used in any crimes.