Charges against an 18-year-old Fall River man already in custody in connection to last Tuesday's double homicide in Fall River have been upgraded to murder.

The Bristol County District Attorney’s Office says a new criminal complaint charging Jeremy Holmes with two counts of murder and one count of assault and battery by means of a firearm was filed in Fall River District Court late this morning.

Holmes still also faces charges of carrying an illegal firearm, carrying a loaded illegal firearm, and unlawful possession of a large capacity firearm.

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Holmes was arrested last Friday at a hotel in Burlington in connection with the shooting near Griffin Park that killed 14-year-old Miguel Sanjurjo, 14, and Jovaughn Antonio Mills, 29, and also left a third man injured but expected to survive.

A second defendant connected to the incident, Dana Mazyck, 21, of Fall River, was apprehended Tuesday in Fall River. He is charged with carrying an illegal firearm, carrying a loaded illegal firearm and unlawful discharge of a firearm within 500 feet of a building. Mazyck appeared in Fall River District Court on Tuesday and was ordered held pending the results of a dangerousness hearing scheduled for June 2.

"I want to thank investigators and prosecutors from Fall River Police and from our office for their tireless effort in investigating these very violent and tragic deaths," District Attorney Thomas M. Quinn III said. "Their hard work has now led to murder charges against this defendant and firearm charges against a second defendant. The facts of this case are very disturbing and tragic, especially since it involves very young individuals."

"It is particularly concerning that residents of the Corky Row section of Fall River cannot feel secure in their own neighborhood at four in the afternoon, and were subjected to multiple rounds of gunfire that took two lives and injured a third person. Given the time of day and the number of people in the park, it is very fortunate that more people were not killed or injured," he said.

The D.A.’s Office says the investigation is ongoing.

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