A detective was driving on Turnpike Street Sunday night when he noticed a vehicle driving about 20 miles per hour, which is 10 mph below the posted speed limit.

STOUGHTON — Two men were arrested and charged with illegally possessing a loaded handgun and cocaine following a motor vehicle stop Sunday night.

A detective was driving on Turnpike Street when he noticed a vehicle driving about 20 miles per hour, which is 10 mph below the posted speed limit, said police Lt. John Bonney.

“The car was going back and forth from one lane to the other,” Bonney said. “He decided to stop the vehicle.”

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The detective conducted the motor vehicle stop on Fourth Street, a dead-end street located off of Turnpike Street, at about 9:42 p.m.

Police say the driver was identified as 23-year-old Jonathan Alves of Bridgewater and the passenger as 25-year-old Bryan Santos of Brockton.

“Both men admitted to smoking marijuana,” Bonney said. “The vehicle was a rental, but it wasn’t rented to either person in the vehicle. The operator didn’t have a driver’s license on him.”

During a search of the car, which was going to be towed due to neither man being named on the rental agreement, the detective located a loaded handgun inside a bag in the glove compartment, Bonney said.

Police say they seized 15 rounds of ammunition found in a magazine.

The cocaine, which weighed 1.9 grams, was located in the same area of the vehicle as the gun, Bonney said.

“There were several bags of marijuana packaged for resale,” Bonney said. “They weren’t charged with anything in relation to the marijuana.”

Police did, however, seize $2,370 of cash that was inside the vehicle, Bonney said.

Alves and Santos were arrested and charged with carrying a loaded firearm without a license, illegal possession of ammunition, possession of a large-capacity feeding device and possession of a Class B drug (cocaine). Alves will additionally be charged with unlicensed operation of a motor vehicle. Police say more charges may be filed prior to arraignment.

The men are expected to be arraigned Tuesday during a teleconference from the Stoughton Police Department due to courts being closed, except for emergency matters, because of the coronavirus pandemic.

Senior reporter Cody Shepard can be reached by email at cshepard@enterprisenews.com. You can follow him on Twitter at @cshepard_ENT.