BRIDGEPORT — A local man has been charged with drowning his friend in Ash Creek following an argument over the merits of the city’s drug trade.

Richard “Ricky D” DeCarvalho, 33, of Scofield Avenue in Bridgeport, surrendered to police Wednesday morning after learning there was a warrant for his arrest.

He was charged with criminally negligent homicide, third-degree assault and second-degree breach of peace and was being held in lieu of $300,000 bond.

His lawyer, John Cohane, declined comment on the arrest.

DeCarvalho is accused of drowning 42-year-old Wayne “Little” Bentley, of West Haven, in the creek behind Chubby’s Bar on Fairfield Avenue on Aug. 1.

The victim was found floating and tangled in brush beneath the overpass marking the Bridgeport-Fairfield town lines on Fairfield Avenue at about 2 a.m. Bentley was pronounced dead at Bridgeport Hospital.

Police said witnesses told them DeCarvalho and Bentley had been arguing in the bar a few hours earlier, apparently over DeCarvalho’s interest into getting into the illegal drug trade. The argument continued into the parking lot and witnesses recalled seeing the men wrestling on the ground and then rolling together down the hill and into the creek.

DeCarvalho emerged several minutes later, soaked to the skin. When a witness asked DeCarvalho where Little was he responded, “He is right there. I can see him. He is being (an expletive) and doesn’t want to get out of the water,” police said.

When, after a time, another witness questioned DeCarvalho about Bentley’s whereabouts, DeCarvalho angrily stated, “I just lost a flip flop, nobody gives a (expletive) about that,” police said.