A Mass was held in Minneapolis on Saturday to mourn the victims of a shooting attack at a Catholic church days earlier.

Two people were killed and 17 others were injured by a shooter who opened fire with a rifle during Mass at the Annunciation Catholic School on Wednesday.

Rev. Dennis Zehren, who was inside the church with nearly 200 children as the attack took place, led Saturday's service at the Annunciation Parish.

Armed with a rifle, shotgun and pistol, 23-year-old Robin Westman approached the side of the church and shot dozens of rounds through the windows toward the children sitting in the pews during Mass, Minneapolis Police Chief Brian O’Hara said at news conferences.

He said the shooter then died by suicide.

The children who died were 8 and 10.

Fourteen other kids and three octogenarian parishioners were wounded but expected to survive, the chief said.