PITTSBURGH — A state representative from Pittsburgh was fined $50 plus court costs for disorderly conduct after city police dropped a charge that he smoked marijuana while tailgating last month outside a Steelers game.

Democratic state Rep. Paul Costa appeared briefly at a hearing in Pittsburgh Municipal Court on Wednesday, but no testimony was taken before District Judge Kevin Cooper imposed the fine. A police spokeswoman said she couldn’t comment on the decision to drop the charge.

Costa’s attorney, Phil DiLucente, said plea bargains are typical for such minor marijuana charges, but he refused to describe what was “disorderly” about Costa’s behavior on Oct. 3.

DiLucente had previously denied Costa smoked marijuana, saying the lawmaker “detests” the drug.

“At this juncture, we’re not going to focus any more on the incident and the reason is there’s a plea agreement,” DiLucente told reporters after the hearing as Costa stood silently beside him. “We’ve plead to the disorderly conduct. This has caused Mr. Costa and his family a lot of time and expense.”

Two undercover offers were patrolling a Heinz Field lot looking for unlicensed vendors and ticket scalpers when they noticed the “overpowering scent of burning marijuana” and saw Costa, 51, and a friend, Mitchell Brourman, “smoking and passing between them a hand-rolled white cigarette,” according to court papers.

Brourman allegedly dropped the joint when the officers showed their badges, and both men said, “You got us,” police said.

Police said they also found a small amount of marijuana in an orange pill container in a compartment in Brourman’s vehicle door.

Brourman also was fined $50 plus court costs. He left court without commenting.