HOLDEN (WGME) -- Police say they made the largest drug bust in Holden’s history.

Holden police say they pulled over a car for a routine traffic stop on Sunday and discovered a gun, cash, heroin, Xanax, and a lot of fentanyl.

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The street value of the drugs is more than $45,000.

Police then arrested 29-year-old David Rowland of Stonington and 28-year-old Alex Hanna of Penobscot.

"To see that degree, that amount, 216 grams of fentanyl. We are talking about a pretty significant amount of fentanyl and that's a very dangerous drug,” Holden Police Chief Chris Greeley told WVII.

Rowland was charged with possession of a firearm by a felon, violation of conditions of release, and unlawful possession of scheduled drugs.

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Hanna was charged with unlawful possession of scheduled drugs.

Police say this is an ongoing investigation and they expect more charges for both suspects.

WVII contributed to this report.