What led Georgia police officers to shoot 3 people within 3 hours?

In this image made from July 6, 2016, video captured by a camera in the squad car of St. Anthony Police officer Jeronimo Yanez, the Minnesota police officer is shown after shooting into the vehicle at Philando Castile during a traffic stop in Falcon Heights, Minn., as the 4-year-old daughter of Castile's girlfriend, Diamond Reynolds, starts to get out of the car and is grabbed by an officer. The video was made public by the Minnesota Bureau of Criminal Apprehension and the Ramsey County Attorney's Office, Tuesday, June 20, 2017, just days after the officer was acquitted on all counts in the case. (St. Anthony Police Department via AP)

In this image made from July 6, 2016, video captured by a camera in the squad car of St. Anthony Police officer Jeronimo Yanez, the Minnesota police officer is shown after shooting into the vehicle at Philando Castile during a traffic stop in Falcon Heights, Minn., as the 4-year-old daughter of Castile's girlfriend, Diamond Reynolds, starts to get out of the car and is grabbed by an officer. The video was made public by the Minnesota Bureau of Criminal Apprehension and the Ramsey County Attorney's Office, Tuesday, June 20, 2017, just days after the officer was acquitted on all counts in the case. (St. Anthony Police Department via AP)

During a three-hour period, Georgia police officers fired shots at three people, killing two.

The three shootings Monday brought the total number of officer-involved shootings in the state to 40 so far this year. That rate means Georgia will likely match 2016 numbers, when officers shot 77 people, killing 24 of them, according to numbers provided by the GBI, which investigates use-of-force cases.

MORE: Officer-involved shootings hit 40 in Georgia in 2017

A look at the three shootings:

» At 4:47 p.m., a Walker County resident called 911 to report a suspicious man on his street. Cpl. J.D. Holland was dispatched to the area and found the man, later identified as James Allen Johnson, but Johnson ran. When Holland caught up with the man, Johnson stabbed him several times.

Holland was able to fire two shots at Johnson, who later underwent surgery and survived. Holland’s injuries were not life-threatening, Wilson said.

» Within an hour of the Walker shooting, another officer-involved shooting happened in Houston County, where a deputy followed Christopher Cashell inside his home and watched as Cashell grabbed a gun, police said.

“Drop the gun! Drop the gun!” the deputy yelled, according to a GBI agent.

Instead, Cashell pointed his gun at the deputy, who fired four shots, killing Cashell, according to police.

» About 200 miles away, GBI agents were also called to investigate an officer-involved shooting that happened in Glynn County shortly before 8 p.m. Monday, Special Agent Stacy Carson said.

Residents of a Brunswick apartment complex alerted an off-duty officer that a couple was fighting, Carson said. David Leon Ball was stabbing a woman, and the officer shot Ball, who died from injuries after being taken to the hospital for treatment. The woman, whose name was not released, was in stable condition, police said.