BLOOMINGTON (CBSLA)  –An off-duty sheriff’s deputy fatally shot his brother during a party in Bloomington Saturday evening, authorities said.

The deceased had allegedly grabbed a knife during an altercation with family members and slashed at least one.

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Detectives from the Fontana station are investigating the fatal shooting and attempted murder that took place in the front yard of at a residence.

Just after 9:10 p.m., authorities responded to a call of shots fired in the area of Magnolia Street and Marygold Avenue.

A subsequent call said that someone had been shot at a resident in the 9800 block of Magnolia Street.

Deputies arrived on scene and said they found numerous people in the home’s front yard including 28-year-old Bloomington resident Israel Miranda, who was suffering from apparent gunshot wounds.

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Miranda was transported to Arrowhead Regional Medical Center where he was pronounced dead.

A male victim, later identified as Sergio Miranda, 24, had a laceration to his hand and refused treatment at the scene.

Homicide detectives learned that Israel was on active parole and had a history of violence.  Witnesses said there was a family party and an argument ensued between several family members that escalated in the front yard. . During the argument, Israel allegedly armed himself with a knife and assaulted family members. During the assault, Humberto Miranda, who is Israel’s 26-year-old brother and the off-duty deputy sheriff with the San Bernardino County Sheriff’s, shot Israel.

The investigation will be submitted to the DA’s Office for review.

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Anyone with information is asked to call Detective David Lara at (909)387-3589. Callers wishing to remain anonymous can call the We-tip Hotline at 1-800-78-CRIME (27463) or the WeTip Hotline.