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Slain Yarmouth Officer Sean Gannon was New Bedford Native

A Barnstable Police cruiser outside the hospital where an injured officer was brought

A man charged with killing a police officer and described by authorities as a violent career criminal was ordered held without bail Friday.

Latanowich's next court date was scheduled for June 26. He made no eye contact with anyone in the court.

"Sean was a wonderful, wonderful young man", Yarmouth Police Chief Frank Frederickson said, according to WCVB. We're going to miss him terribly. "He died doing what he loved".

Not-guilty pleas to charges including murder were entered on his behalf, and the judge said she would appoint a lawyer to represent him.

The suspect, who has a criminal history, is now in custody, but a shootout with police ensued around 5:45 p.m. after the suspect fatally shot Gannon, CBS 5 reported. In 2010, he faced gun and drug charges. "He had a probationary sentence after that". He had been also serving the merit in city of Barnstable.

Shaughnessy said the school will create a memorial for Gannon on school grounds.

Gannon's K-9 partner, Nero, was wounded. Dennis Veterinary Hospital posted on Facebook that Nero was shot in the face and neck but had been stabilized and faced surgery Friday. "I hope that everybody out there appreciates the work that police officers across the country do everyday". "The department is going to miss him terribly".

"Our hearts break with the Yarmouth Police Department tonight", he said.

"Around 3:30, a local police officer (was) shot during a warrant service at 109 Blueberry Lane, Barnstable", state police spokesman David Procopio told the Herald in an email last night. Our honest condolences to his wife, extended family, Yarmouth Police Department, and the many Westfield State University alumni and citizens of MA whom Sean positively impacted during his time here at Westfield State and his career in law enforcement.