ARVADA — Two men who lost their lives in a Monday shooting in Olde Town Arvada were mourned Thursday at a vigil at the Shrine of St. Anne Catholic Parish.

Mourners gathered to honor Arvada police officer Gordon Beesley and bystander John Hurley, both of whom were killed in the shooting, which ended with the shooter also dead. Authorities say the shooter deliberately ambushed Beesley because of his hatred for police. Sources on Thursday confirmed that Hurley, a bystander who intervened by shooting the man, was shot by another police officer responding to the scene.

A few hundred attendees sang hymns and prayed. Beesley’s official police department portrait and a photo of a smiling Hurley flanked the pulpit.

“We’d like to welcome you this evening as we remember Officer Beesley and John Hurley, who laid down their lives to provide for the safety of our community,” said Sean McGrath, pastor of Shrine of St. Anne Parish.

Arvada City Manager Mark Deven read comments posted on social media praising Beesley’s kindness, compassion and affinity for connecting with children as a school resource officer at Oberon Middle School.

”He was a really cool guy,” read one post from a student. “I remember when I was at Oberon we used to have conversations all the time. I really, really, really liked Officer Beasley.”

Arvada Deputy Police Chief Ed Brady said he cherishes his final conversation with Beesley, whom he last saw Monday morning. He didn’t often see Beesley because of his posting at Oberon, Brady said, so seeing him was a “treat.” The two exchanged small talk and pleasantries about the day’s plans.

“He brought that smile with him everywhere he [went],” Brady said.

He thanked other law enforcement departments and investigators who have stepped in to respond to the shooting and to try to get to the bottom of how the deadly incident unfolded.

“I see our fellow Jefferson County law enforcement agencies who came to our aid, took over the scene so our brothers and sisters in the police department could go back to the police department and grieve. I saw crime scene investigators who would not leave that scene because their way of honoring Gordon was to stay there and do a great investigation,” Brady said.

Beesley’s funeral will take place at 10 a.m. Tuesday at Flatirons Community Church in Lafayette, the same church that hosted Boulder Police Officer Eric Talley‘s funeral in March. Talley died in the King Soopers massacre.

Though the memorial service is not open to the public, FOX31 NOW will livestream the service.

Although investigations of the shooting are ongoing, an eyewitness said Hurley was shopping in Olde Town Arvada’s Army Navy Surplus store when those inside heard about 10 to 15 shots. According to a post by the store’s Facebook page, Hurley ran outside, pulled out a concealed pistol and shot about five or six rounds toward the shooter.

“What I do know was that John Hurley was a hero, and he saved lives,” Brady said, as attendees burst into applause at his words.

The Jefferson Center for Mental Health has set up an Arvada Family Assistance Center at the Shrine of St. Anne’s Catholic School, open to anyone in Arvada, according to a Facebook post.