PHILADELPHIA (CBS) – Philadelphia police confirm a man, carrying a seven-inch butcher knife, was shot and killed following a struggle with officers.

Police say officers responded to a call of a person with a knife at about 7 a.m. Saturday at the intersection of Castor and Robbins Streets in the Oxford Circle section of the city.

According to officials, when police arrived they knocked the unidentified suspect to the ground using the push bumper of their police cruiser after seeing him standing in the middle of the street with the knife.

Investigators say the officers then exited their vehicles and used pepper spray on the 23-year-old suspect after he refused to drop the knife.

Authorities say the spray had little effect on the man, who then ran toward police with the knife still in his hand. It was then, police say, that officers fired at the suspect.

Officials say the suspect continued to fight with police, knife in hand, even after the officers shot him.

Police say three officers were eventually able to wrestle the knife from the man who was taken to Aria Torresdale Hospital, where he was later pronounced dead.

This is the fourth police-involved shooting in the past week.

Read: 1 Hospitalized In Police-Involved Shooting In North Philadelphia:

Read: Deadly Police-Involved Shooting In Germantown:

Read: 1 dead In Police-Involved Shooting In West Philadelphia:

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