A Manhattan jury on Monday convicted three men of murder in the drugging and robbing of patrons of gay bars and clubs, two of whom were killed as their bank accounts were being drained.

One of those killed, Julio Ramirez, was left in the back of a taxi. The other, John Umberger, died in a townhouse where his attackers partied next to his lifeless body.

The three men, Jayqwan Hamilton, 37, Jacob Barroso, 32, and Robert DeMaio, 36, were also convicted of robbery and conspiracy.

Around 2:30 Monday afternoon, the jury forewoman stood up from her seat in the jury box and announced a verdict of “guilty” to each and every count that the defendants faced. As she spoke, family members of the men gasped.

As the three left the courtroom, their hands cuffed behind their backs, friends and relatives in the gallery shouted, “Love you.” Mr. DeMaio looked into the crowd as he was led away, tears streaming down his reddened face.

All three men were convicted of the murder of Mr. Ramirez, as well as conspiracy and various counts of robbery. Mr. DeMaio and Mr. Hamilton were both convicted of burglary and of the murder of Mr. Umberger.