As federal, state and local authorities work to piece together events leading up to Monday’s rampage in Boulder, Colorado, that left 10 dead, more information is being made public.
On Tuesday, Boulder Police Department released the arrest affidavit for 21-year-old shooting suspect Ahmad Al Aliwi Alissa, of Arvada. He was arrested Monday at the south Boulder King Soopers where the shooting occurred and is jailed without bond on suspicion of 10 counts of first-degree murder and one count of attempted first-degree murder.
Here are key times and dates outlined in the arrest affidavit and other official records:
Live updates:What we know about the Boulder shooting
March 16: Suspected shooter buys weapon
Time unknown: Alissa purchases a Ruger AR-556 pistol. Investigators determined the date of purchase following the shooting.
March 22: Shooting at King Soopers kills 10
2:40 p.m.: Boulder police are called to the King Soopers at 360 Table Mesa Drive for a report of an active shooter. Witnesses tell emergency dispatchers that a male suspect shot another man in a vehicle parked outside the store and then shot at others. Multiple people report hiding in the store.
2:49 p.m.: Boulder police announce an active shooter threat and instruct people to avoid the area of the grocery store.
Time unknown: Officer Richard Steidell responds to the scene to help search for the suspect. He observes Officer Eric Talley down and apparently deceased. Steidell observes the suspect shooting an assault rifle toward him.
Time unknown: Officer Brad Frederking, posted outside the east doors at the building’s north side, observes SWAT officers enter the building with a portable body shield and drag Talley’s body out to the parking lot. Shortly after, Frederking hears SWAT speak to someone and sees Alissa walking backward toward the SWAT team to be taken into custody. Alissa had removed all of his clothing, other than shorts, and had blood on his right thigh from a gunshot wound. A photo of the items he removed shows a green tactical vest, a rifle (police say possibly an AR-15), a semiautomatic handgun, a pair of jeans and a dark-colored, long-sleeved shirt.
3:28 p.m.: Alissa is taken into custody and transported to the hospital for treatment of a gunshot wound to the right thigh.
10 p.m.: Search warrants are signed for Alissa’s residence, the scene of the shooting and Alissa.
10:15 p.m.: Arvada police begin to send information to Boulder police regarding the search warrant for Alissa’s residence. Uniformed officers stop a vehicle leaving the residence and interview Alissa’s sister-in-law. She tells officers that one of his brothers owned a handgun and that Alissa had been “playing with a gun she thought looked like a ‘machine gun’ about 2 days ago.’ “
March 23: Boulder shooting victims identified
1:30 a.m.: The last victim is removed from the scene.
2:02 a.m.: All victims are identified, according to a Boulder police news release.
3:59 a.m.: All families of victims are notified, according to a Boulder police news release.
8:30 a.m.: Authorities release the identity of the shooter and the names of the 10 victims.
10:49 a.m.: Alissa is booked into the Boulder County Jail, according to online booking records.