Prosecutor: Video shows ex-coach stalking boy who was slain

Defendant Oral "Nick" Hillary listens as his defense attorney, Norman Siegel, right, delivers an opening statement at the St. Lawrence County Courthouse in Canton, N.Y., on Monday, Sept. 12, 2016. (Jason Hunter, Watertown Daily Times via AP, Pool) (The Associated Press)

Attorneys Earl Ward, left, Norman Siegel, center, and defendant Oral "Nick" Hillary talk during opening statements for Hillary's trial at the St. Lawrence County Courthouse in Canton, N.Y., on Monday, Sept. 12, 2016. (Jason Hunter/Watertown Daily Times via AP, Pool) (The Associated Press)

Onondaga District Attorney William Fitzpatrick, left, and St. Lawrence County District Attorney Mary Rain talk during the trial of Oral "Nick" Hillary at the St. Lawrence County Courthouse in Canton, N.Y., on Monday, Sept. 12, 2016. (Jason Hunter, Watertown Daily Times via AP, Pool) (The Associated Press)

A prosecutor says surveillance videos will help show that a former college soccer coach killed his ex-girlfriend's 12-year-old son in New York in 2011.

Opening statements were delivered Monday in the murder trial of Oral "Nick" Hillary.

Onondaga County District Attorney William Fitzpatrick, who is helping his counterpart in St. Lawrence County, told the judge hearing the case that outdoor surveillance videos in the village of Potsdam show Hillary stalking Garrett Phillips before the boy was strangled on Oct. 24, 2011.

Defense lawyers say the prosecution lacks physical evidence.

Hillary was the men's soccer coach at Clarkson University. He and his daughter had lived with the boy's mother until the relationship ended in summer 2011.

His supporters claim authorities in the largely white community are unjustly pursuing a black man.