Windsor Police have issued a warrant for one suspect and arrested three people after a firearms-related assault in Windsor. Officers were called to a disturbance at a business on Campbell Avenue around 10:30 p.m. on October 26, where a person was reportedly suffering from serious injuries. Police allege the victim was lured to a nearby home and confined inside. There, three men and a woman allegedly assaulted the victim, pointed a handgun at them, threatened to kill them, and fired a round into the floor near their feet. Investigators also allege the victim was assaulted with multiple weapons and sexually assaulted before escaping the home. The victim was taken to hospital with serious but non-life-threatening injuries. Windsor Police Major Crime Unit identified four suspects they believe are connected to the attack. A 27-year-old woman was already in police custody when she was arrested on October 29. She faces charges including sexual assault with a weapon, forcible confinement, assault causing bodily harm, assault with a weapon, and breach of probation. On November 2, police arrested a 35-year-old man believed to be involved. He has been charged with forcible confinement. A third suspect was arrested on November 5 following an armed standoff at a home in the Town of Essex. Police said a man pointed a weapon at officers and threatened to kill them, then later allegedly came out of the home charging at officers with a knife. He was arrested with help from the K9 Unit. The 62-year-old man faces charges including sexual assault with a weapon, discharging a firearm with intent, forcible confinement, five counts of possession of a firearm while prohibited, possession of a prohibited firearm, pointing a firearm, possession of a dangerous weapon for committing an offence, and uttering death threats. Police are still looking for the fourth suspect. They have issued a warrant for William J. Dufour, 45, facing charges including discharging a firearm with intent, assault causing bodily harm, assault with a weapon, assault, forcible confinement, and two counts of breaching probation. Investigators asked anyone with information to contact the Windsor Police Major Crimes Unit at 519-255-6700 ext. 4830.