Seattle police, responding to a call of shots fired in the Central District early Sunday, found a gun hidden in bushes, spent shell casings at the scene and a single bullet on the seat of a car stopped by officers.

The incident came after a week of three deadly shootings in the Leschi area and Central District. Police have said they don’t know if the killings are related to one another, and they are not ruling out gang activity.

About 5 a.m. Sunday, a caller to 911 reported hearing shots fired near the intersection of 12th Avenue South and South Main Street.

East Precinct officers, already in the area, quickly responded and stopped a car with five men in their 20s inside leaving the area. Police found a gun in nearby bushes and about a dozen spent shell casings at the scene.

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The car that was stopped was impounded after officers found a bullet on the front passenger seat and what appeared to be a bullet hole in the rear bumper.

There were no reported injuries or other damage in the Sunday incident. The men in the car, all in their 20s, were identified and released from the scene pending further investigation, police said

On Friday night, a 36-year-old man was fatally shot just before 11 p.m. in the Leschi neighborhood near 28th Avenue South and South Charles Street.

The previous evening, about two blocks north of Friday’s shooting, a 20-year-old man was shot to death about 7 p.m.

And on April 19, a 24-year-old man was fatally shot about 2:30 a.m. near East Union Street and 22nd Avenue.

The evening before that homicide, gang detectives responded to reports of shots fired near 23rd Avenue and East Union Street around 7:30 p.m. They arrested an 18-year-old man after they discovered he had a handgun and there were warrants out for his arrest.

Police are asking anyone with information about the shootings to call 911.

Jack Broom: jbroom@seattletimes.com or 206-464-2222