The known sequence of events so far in the Madison shootings:

• Sometime just before 7:30 a.m. Wednesday, Carroll Tuttle Jr. shoots and kills his partner, Lori Hayden, and their son, Dustin Tuttle, at the family’s home at 316 Russell Road. Dustin Tuttle’s girlfriend is also there, witnesses the shootings and survives after escaping and calling 911 around 7:37 a.m.

• Tuttle Jr. then gets in his pickup truck, drives a short distance up the road to the home of Mike R. Spaulding at 299 Russell Road, shooting and killing him. Spaulding’s girlfriend, Sherry, is there when the shooting takes place and she also calls 911.

• Sherry calls Spaulding’s son, Michael J. Spaulding, 21, of Gorham, a few minutes later, saying Tuttle Jr. had just shot his father.

• Tuttle Jr. leaves the Spaulding residence, but where he went is unknown.

• Three Somerset County Sheriff’s deputies — Chief Deputy James Ross; his son, Detective Michael Ross; and Deputy Joseph Jackson — arrive in the area and respond to the Spaulding home. The deputies get a description of Tuttle Jr.’s pickup truck from Sherry, according to neighbor Donald Curtis, who lives at 294 Russell Road.

• Curtis sees the deputies and an ambulance at the Spaulding residence, then sees the deputies come down the Spaulding driveway and notice Tuttle Jr.’s pickup truck parked along the road, near the Hayden/Tuttle home.

• Around the same time, Harvey Austin arrives at 316 Russell Road to check on Hayden, who is his sister-in-law and works at his construction business. Austin, who lives on River Road in Skowhegan, goes into the house, comes out and Tuttle Jr. shoots Austin in the face, according to Curtis, who sees Austin fall to the ground.

• Following the gunshot, a sheriff’s deputy confronts Tuttle Jr., who begins shooting at police, according to Curtis.

• Another deputy grabs Curtis and moves him under a truck to take cover as the deputies return fire at Tuttle Jr. Curtis hears “20 to 30” gunshots in all.

• When Curtis next sees Tuttle Jr., the gunman is dead in the driveway.

• Austin is taken by ambulance to Redington-Fairview General Hospital in Skowhegan, where a LifeFlight helicopter lands to take him to Eastern Maine Medical Center in Bangor for treatment of gunshot wounds.

Source: Based on police statements and an eyewitness account by Donald Curtis