Police are asking for the public's help to locate the person believed to be responsible for the shooting death of a Toronto-area construction company executive.

Donato Frigo and his wife, Eva, were shot while training their hunting dogs near the Hullett Wildlife Conservation Area, northeast of Clinton, Ont. on Saturday, Sept. 13.

A male approached the couple, shot them, and then fled the scene.

Donato, 70, was killed. His wife was wounded, but managed to escape on horseback.

At a news conference on Friday, OPP said the investigation into the murder led officers to Scarborough, Ont. where search warrants were conducted on Wednesday.

Police said they'd seized a number of exhibits, which have since been taken for forensic examination. They did not explain what items are under investigation.

As a result of the search and seizure, police are asking the public to help locate 70-year-old Boris Panovski. He's described as 5-foot-7, and 200 pounds, with brown hair and blue eyes, though police said he may have changed his appearance to avoid detection.

He may have been driving a blue 1998 Toyota four-door sedan.

Panovski and Frigo knew each other, police said, but wouldn't elaborate on their relationship.

Panovski is considered armed and dangerous. Witnesses are advised not to approach him, but to contact police immediately and provide location details.

Anyone with information on his whereabouts is asked to call police at 1-844-278-4794, or Crime Stoppers anonymously at 1-800-222-8477 (TIPS). Tipsters may be eligible for a $2,000 cash reward.