Toronto police say four people are facing charges after officers allegedly found drugs and guns in a home on Saturday night.

Police say they executed a search warrant and seized four guns -- including a sawed-off shotgun -- a "large quantity" of ammunition and more than 500 grams of marijuana.

They say two adults and two young people were arrested and are each facing eight charges, including careless storage of a firearm, possession of a prohibited firearm with ammunition and possession of marijuana for the purpose of trafficking.

Investigators say one of the young people was also charged with failing to comply with recognizance.

They say the four accused appeared in court on Sunday.

Police say the investigation is part of an initiative called "Project Red Brick," intended to address "an increased level of firearms-related crime in the Regent Park community" of Toronto.