After a month of several fatal shootings by police officers in the Denver metro area, police say they don’t believe any particular pattern has driven the May spike.

“There’s no predictability, and none of them are connected,” Denver Police Department Division Chief Joe Montoya said in a news conference Wednesday. “There’s nothing to lead us to believe that there’s any sort of trends or anything that that’s leading to this.”

Police held the briefing to provide information about a man fatally shot by two Denver officers after allegedly threatening them with an assault rifle Sunday.

The Denver Office of the Medical Examiner identified the man as 29-year-old Shannon Wright. According to his Facebook profile, Wright was a Denver resident survived by his wife and young daughter.

His death represents the fifth officer involved shooting in the Denver-metro area in May, and fourth fatal shooting since May 14.

The first shooting occurred May 8 when an officer was shot in the leg by a man allegedly trespassing on someone’s porch. The officer survived and the man was later found and arrested.

On May 14, several officers fatally shot an armed man after a car chase. Police said the man was threatening the officers after they were called on reports that the man was firing a gun in the air at a playground.

Several days later, members of the Englewood Police Department fatally shot 22-year-old Caleb Jereme Grisenti after he injured three officers by dragging them with a stolen vehicle.

The most recent shooting happened on May 19, when an officer shot 52-year-old Raul Rosas-Zarsosa, who police said was approaching Denver officers with a knife. Police said the officers used 10 pepperballs and a Taser to subdue Rosas-Zarsosa, but were unsuccessful, which led to one officer firing multiple shots that struck the man.

Prior to Sunday’s fatal shooting, Denver officers responded shortly after 3 p.m. to an incident at a liquor store in the 1300 block of West Alameda Avenue during which the clerk said a man threatened him with an assault rifle through the store’s drive-thru window. Two nearby officers responded and found the suspect, later identified as Wright, walking a block away from the original scene with an assault rifle, police reported.

Montoya said investigators don’t know whether Wright possessed the weapon legally, and are working to determine how he got it.

Police said officers got out of their patrol vehicles and began issuing commands to Wright to put his hands up and drop his weapon, but he did not comply and began walking towards the officers, allegedly threatening them with the rifle by pointing it in their direction. Two officers fired at him in response, police said. Wright was later pronounced dead at a hospital.

Montoya said the number of shots fired by the two officers is part of the  investigation.

No officers or bystanders, including the liquor store clerk, were injured during the incident.

The police department has activated its critical incident, officer-involved shooting protocol team, which will start a multi-agency investigation into the shooting, monitored by the Denver District Attorney’s Office and the Office of the Independent Monitor. Both officers have been placed on modified duty for the duration of the investigation process.

Denver Gazette reporter Hannah Metzger contributed to this report.