CHELSEA – Three buddies of accused Revere cop killer Robert Iacoviello were held on high bails Monday for allegedly shooting at a woman who recently testified in the Officer Daniel Talbot murder investigation, sources said.Prosecutors say Daniel J. Cote, 19, fired at the woman.”The facts of this case are serious? with respect to that individual having testified in a grand jury case,” prosecutor Veronica Dedosantos said.Cote belongs to the “Bloods” gang, according to court documents, along with Iacoviello 21, and James Heang, 18, who were charged with Talbot’s murder. Another alleged Bloods member, Derek Lodie, 18, and Iacoviello’s girlfriend Gia Nagy, 18, were also charged in connection with the officer’s homicide.At about 6:30 p.m. Friday, police rushed to 118 Cooledge St. on a report of shots fired. The victim told police she was on the sidewalk when Cote fired at her from a moving car allegedly driven by 18-year-old Sigfredo Sanchez, according to prosecutors.Steven Acevedo, 19, of 109 Franklin Ave., Revere, was also in the vehicle and allegedly was caught by police trying to hide the gun a short time later.Police recovered a single bullet at the scene, which prosecutors say was shot from a .380 caliber semi-automatic pistol.Police arrested the three suspects at about 9:45 p.m. Friday after conducting surveillance at a nearby home. The three are well known to police for serious crimes.Sanchez, of 5 Florence Ave., Revere, was previously charged with vehicular homicide for the July 23, 2007 death of Megan Power, 17, of Somerville. Sanchez was allegedly drunk and driving without a license when his motorcycle wrecked at the corner of Centennial and Franklin avenues around 1:30 a.m.Cote, of 1 Scott Drive, Peabody, was arrested July 19, 2007 for robbing and stabbing a 24-year-old man – puncturing his lung – at the corner of Cooledge and Adams streets.According to a police report written by officers David Caramanica and the late Talbot, the victim’s “lung was punctured, causing his lung to fill up with blood.”The police report, which was obtained in court records, also says the responding officers discovered Iacoviello and Heang and two other “known members of the ‘Bloods’ street gang” standing “approximately 50 yards away from where the assault was alleged to have taken place.”On Monday, a Chelsea District Court judge ordered Cote and Sigfredo’s bails revoked for violating probation on their open criminal cases and ordered Acevedo held on $5,000 cash bail.Cote was charged with discharging a firearm within 500 feet of a building, carrying a firearm without a license and assault with a dangerous weapon. Acevedo was charged with carrying a firearm without a license and Sanchez was charged with assault with a dangerous weapon.Jake Wark, spokesman for Suffolk County District Attorney Dan Conley, said he was not at liberty to identify the court case for which the victim testified, but said the DA takes witness intimidation seriously.”The allegation of witness intimidation is one we investigate thoroughly and prosecute aggressively,” Wark said, adding that the suspects have not been charged yet with witness intimidation, but says more charges could come soon.A police source identifies Cote as the son of the late Sean Cote – a suspect in a fatal mid-1990s New Hampshire armored car heist who later became a key witness in a 1997 grand jury investigation into members of organized crime in Boston.