Officers seized more than 17 thousand pot plants Tuesday at a facility in St. Catharines in what the police say is its largest marijuana grow op investigation.

Investigators say a suspect also brandished a knife during an altercation.

The Office of the Fire Marshal has been called to investigate a fatal Monday morning fire near Front Street North and Albert Street East in Thorold, Ont.

Niagara police said around 1:10 p.m. "as a direct result of the Amber Alert," the suspect attended a police station in St. Catharines and surrendered himself to officers.

Niagara Regional Police say officers arrived at the scene near Lundy's Lane and Beaverdams Road around 8:40 p.m.

Niagara Regional Police have laid charges against 'an involved individual' following a crash in rural Hamilton.

Police in Niagara say a passenger in the sedan died at the scene near North Service and Sann roads.

A 28-year-old female passenger was able to swim to safety. A man in the driver's side of the vehicle was pronounced dead at the scene.

Detectives say the woman was riding among a group of motorcycles when she lost control.

A single-vehicle crash in West Lincoln has killed one man and sent two others from Hamilton to hospital.