Shots were fired at two houses on the same street in Salford.
Officers are standing guard outside two properties on Coronation Street in Pendlebury this morning.
The two houses, around 300 yards apart, have shattered windows, thought to been damaged by bullets.
It is not known whether anyone has been hurt.
Greater Manchester Police has been contacted for comment, but has not yet released any information.
Residents said they heard two loud bangs at around 11pm on Sunday night (August 18).
Witnesses reported seeing a large police presence on the street shortly after.