Advertisement Affidavit: Police say drug rip-off plan led to Waltham teen's shooting death By Eli Sherman/Wicked Local Share Shares Copy Link Copy

A police affidavit written to support the warrant put out for Domingo Mendes and Taylor Poulin's arrests reveals new gripping details of an apparent drug rip-off that turned deadly, ending in the killing of Waltham High senior Tyler Zanco.Wicked Local reported that Mendes, 22, of Belmont, and Poulin, 21, of Newton, are sought by police in connection with the homicide.Police said Zanco, 17, wanted to set up a fake drug deal with Poulin, also known as "Tru," in retaliation for him ripping off Zanco's younger cousin of two ounces of marijuana, the affidavit said. Zanco wanted to "rip off and beat up Tru for this incident with his cousin."The plan was to meet up with Poulin through a friend, an 18-year-old man, who knew Poulin from prior drug deals, according to the report.The 18-year-old, Zanco and a third friend, a juvenile, set up the alleged drug deal with Poulin, which was supposed to happen at the Chesterbrook apartments, but a witness later told police Poulin thought the 18-year-old might be setting him up with police and asked it be changed to Gardencrest.Poulin, Mendes and two women showed up to the apartment complex parking lot on Middlesex Circle in a gray Dodge Charger, the report said." met outside the vehicles, and after a conversation, removed a backpack with 2 pounds of marijuana from the trunk," according to the affidavit.Zanco then led Poulin to the back of his friend's BMW where he said he had the money. That's when the situation escalated." then used a stun gun to stun Tru and a physical fight ensued between and Tru, which moved to the grassy area in front of the apartment building adjacent to the parking lot," the affidavit said.Mendes, who saw something was wrong, got out of the Charger and yelled, "Where's the J?" which police said is a slang term used for a gun. Mendes went over to the two, who were fighting on the ground, and grabbed a black revolver from the small of Poulin's back, according to the affidavit.Poulin shouted at Mendes, "Shoot! Shoot!," after which Mendes shot once up in the air, the report said.Zanco started running away through the parking lot before two more shots were fired, according to the report.Zanco was later taken to Newton-Wellesley Hospital, where he was pronounced dead. A medical examiner ruled the cause of death to be "a gunshot wound of the chest which entered through the back," according to the report.Mendes and Poulin left in the Charger with the two women, one of which later told police that Mendes got in the car saying, "I shot him! I shot him!"" and talked about the shooting and sounded 'proud,'" one of the women told police. " was bleeding from the left side of his face from being stunned, and it looked like he might need stitches."The four drove through Watertown and into Boston, where they stopped at a liquor store to get a 12-pack of Corona, according to the affidavit. One of the women told police they met with a "dark-skinned black male, possibly Haitian," who agreed to give Mendes his shirt. Mendes asked the man what he should do because the man's friend had "been through it before.""Mendes later said that his friend told him to kill ," according to the affidavit.Poulin gave the two women $100 for a taxi before ditching the car at 472 Commonwealth Ave., Boston, where it was picked up by police. The women split from Mendes and Poulin in Kenmore Square.Later, Mendes allegedly called his girlfriend on the phone crying and told her what happened before supposedly smashing his cellphone." was crying and stating he couldn't talk over the phone. He said he was sorry," according to the report. " admitted that he had done the shooting, and that was with him. stated that he had grabbed gun from hip. He pointed it at the victim and pulled the trigger."Police are asking the public for its help in finding Mendes and Poulin.Mendes is wanted for murder, possession of a firearm and conspiracy to violate drug laws. He is described as a black man, 5 feet 10 inches in height and about 165 pounds. He is considered armed and dangerous, according to the Middlesex District Attorney's Office.Poulin is wanted on charges of assault and battery with a dangerous weapon, unlicensed possession of a firearm and conspiracy to violate drug laws.He is described as a white man, 6 feet in height and about 220 pounds, and may be driving a black 2002 Ford Explorer.