Here is a chronology of events surrounding the bombing Friday at a Willamette Valley bank that killed two Oregon law enforcement officers. Most information comes from investigators’ statements and a probable cause statement authorities released Tuesday:

Nov. 26

* 5:25 p.m.: Two cell phones are purchased at a Bend Wal-Mart.

Dec. 11 (Thursday)

* 12:11 p.m.: Airtime cards for the phones are bought at a Salem Wal-Mart.

Dec. 12 (Friday)

* 4:22 a.m. and 4:30 a.m.: The cell phones are activated over the Internet.

* 10:19 a.m.: An employee at the Wells Fargo bank office in Woodburn gets a threatening phone call from a male who says to get further instructions from a cell phone next to a garbage can, and to leave the building or die.

* 10:24 a.m.: A call comes from one of the cell phones to the other next to the garbage can. Experts then determine there is no bomb.

* A search in the area leads to the next-door West Coast Bank. Later in the day, a device is located and a state bomb technician concludes it, too, is a hoax. Officers bring the device inside.

* 5:24 p.m. The device explodes, killing Oregon State Police Senior Trooper William Hakim and Woodburn Capt. Tom Tennant, critically injuring Woodburn Chief Scott Russell and cutting a bank employee’s leg.

Dec. 13 (Saturday)

* 8 a.m.: Authorities release the names of the killed and injured officers, saying they had delayed the announcement of Hakim’s death to give time to notify his family.

* 2:44 p.m.: Gov. Ted Kulongoski issues a statement saying “Oregon lost two brave and honorable men last night, and another was critically injured, in a tragedy that will forever be remembered in our state’s history.’’

Dec: 14 (Sunday)

* 5 p.m.: Investigators announce that they have photos, apparently from surveillance videos, of a “person of interest.’’ A $35,000 reward is offered for information leading to a conviction and arrest.

* Time not made public: As he would later describe in a probable cause statement, Sgt. John Troncoso runs a Coplink check on blue Chevrolet pickups whose license plates begin with Q and end with 84 — what officers could discern from a surveillance video after the purchase at the Salem Wal-Mart. One is registered in Oregon to Bruce Turnidge. The driver’s license photo for his son resembles the man from the surveillance video.

* 7:57 p.m. Marion County Sheriff Russ Isham announces an arrest. The name of the suspect is withheld.

Dec: 15 (Monday)

* 2:47 p.m.: Joshua Turnidge, 32, is identified as the suspect, accused of aggravated murder and other charges, including conspiracy.

Dec: 16 (Tuesday)

* 8 a.m. Joshua Turnidge makes first court appearance.

* 11:30 a.m. His father, Bruce Turnidge, 57, is arrested.