Here is a timeline of Thursday events at the downtown LDS Family History Library:

10:30 a.m. - Sergei Babarin enters the LDS Church Family History Library at 35 N. West Temple, begins rambling and starts shooting.10:32 a.m. - Police emergency dispatchers get the 911 call of a shooting at the library. Early reports are three people have been shot, including a woman who had a gunshot wound to the head. Library volunteers and employees are quickly ushering as many people as they can out the back doors of the building.

10:34 a.m. - The first officers arrive on the scene, including Brad Davis and Greg Smith. They enter the first floor of the building. Some begin dragging victims out of the building, while others search for the suspect.

10:44 a.m. - Officers find Babarin, who starts shooting at them with a .22-caliber semi-automatic handgun. Officers return fire, then retreat after Babarin barricades himself in an office.

11:15 a.m. - Police continue to push spectators and reporters back from the line of view from the library, fearing the gunman may be able to open fire into the crowd.

11:30 a.m. - The Triad Center at 300 W. North Temple is evacuated after a truck parked across the street is discovered with a suspicious note. Police fear the truck driver and the shooting suspect may have conspired in Thursday's tragic events. The coincidental discovery leads them to believe there may be a second suspect. It was later learned that the truck driver was in the right place at the wrong time and was not connected with the shooting.

11:38 a.m. - The SWAT team conducts a room-by-room, floor-by-floor search of the building for more victims.

11:48 a.m. - Babarin is removed from the building and put into a waiting ambulance.

12:15 p.m. - Employees and patrons of the library, as well as their family members, have been directed to Abravanel Hall, where a buffet has been set up to provide food and refreshments for people traumatized as the result of the shooting.

12:17 p.m. - Another 20 people who had locked themselves in a second-floor room of the library are safely evacuated.

1:35 p.m. - A city public works truck loaded with sandbags continues to wait at the intersection of West Temple and North Temple as officials search the building for suspicious packages that may contain explosives.

1:55 p.m. - Police declare the building clear of all victims and possible explosives.

2:30 p.m. - Close to 200 schoolchildren are released from the adjacent museum.

2:31 p.m. - The chaotic scene takes on a suspenseful silence as police and other emergency officials continue to worry about a potential bomb in the suspicious truck parked near the Triad Center.

4:09 p.m. - Members of the Salt Lake police bomb squad explode a charge on a the truck near the Triad Center.

4:35 p.m. - Bomb squad members gain entrance to the truck and discover the alleged explosives are a two 55-gallon drums. One contains gasoline. The other is empty.

5:05 p.m. - Some of the yellow tape begins to come down, and in the next few minutes, officers allow foot traffic to resume on the east side of the library. Employees and patrons are lined up in front of JB's Restaurant to retrieve their belongings from the library.

5:14 p.m. - While Salt Lake Mayor Deedee Corradini and Police Chief Ruben Ortega brief reporters on the day's events, officers continue to interview the widow of Babarin to determine a motive in the shooting.