JOPPA, Md. (WJZ) — A community said goodbye to a young Baltimore County police officer who co-workers said was full of promise.

Thousands of people attended the funeral of Officer Amy Caprio, who’s life was snuffed out at 29 years old after she was killed in the line of duty Monday.

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According to police, Caprio died while investigating a call for suspicious activity in a Perry Hall neighborhood. Four teenagers have been charged with her murder.

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Rows of police officers lined up outside a Maryland church before filing in for the funeral; some attendees bore flags as they honored the slain officer.

A sea of uniforms poured into Mountain Christian Church, united in grief and by a thin blue line across their badges.

“I think they need to feel supported in this time of need. It’s definitely a family throughout everyone with a badge,” said Cpl. Ryan Shifflett of the Bowie Police Department.

Governor Larry Hogan, the Baltimore County Police chief Chief Terrance Sheridan and Caprio’s mother spoke at her funeral along with four fellow officers. A Baltimore Symphony Orchestra member played a trumpet solo.

Hogan said he regretted never having the chance to meet her.

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Bagpipes played Friday morning as officers carried the casket of one of their own.

“I mean, it’s terrible. We all work together, and we’re a police family, so this hurts us all,” said Maj. Luther Johnson, of the Howard County Police Department.

But hundreds of others from the community also lined the streets by the church to show their support for the fallen officer.

“I just, my heart goes out to you,” said Martha Patrick of Forest Hill, hoping to send a message to the family.

After the funeral, a procession led mourners from the church in Joppa to the burial site at Dulaney Valley Memorial Gardens in Timonium.

Following the procession, hundreds gathered for a vigil at Parkville High School, where Caprio’s mother spoke about her daughter.

“She wanted to be a police officer. It was her passion, her love, her dream. She loved her work, and she loved her network of family, friends, relatives, and the second family she had of police officers and firefighters,” Debbie Sorrells said.

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