KITCHENER -- Waterloo Regional Police are investigating reports of shots fired inside a Kitchener apartment building.

Officers were called to the building on Vanier Drive around 10 p.m. Sunday.

They say witnesses reported hearing an argument, followed by two gun shots in a common area of the building on the seventh floor.

"I was at home, I was sleeping. And I hear a really big noise of police cars. Then I thought something is wrong," said George Varghese, a resident at the building.

They say the suspects fled prior to officers arriving, and there are no known victims at this time.

Police were at the same building last Tuesday, canvassing for information related to a fatal shooting that took place in November at the on-ramp from Courtland Avenue to Highway 7/8.

WRPS public information officer Andre Johnson says there is no information connecting Sunday's incident to other cases.

Anyone with information is being asked to contact police.