Police in Ottawa and London, Ont., are investigating whether a man thought to have drowned in the Rideau River is Muhab Sultanaly Sultan, who is wanted in the London cellphone slaying of Jeremy Cook.

Sultan, 23, is wanted on a charge of second-degree murder in connection with the death of 18-year-old Cook, who was shot and killed while trying to track down his lost cellphone on June 14 in London.

Cook's funeral took place on Monday in Brampton, Ont.

Driver struck officers, tried to swim across river

Police divers continued to search for the man's body in the Rideau River near Riverain Park on Thursday, but came up empty by sundown. Thursday's search was ended at around 10 p.m. ET and will resume in the morning.

Ottawa police said the same man allegedly struck two bike-riding police officers with his car on Wednesday afternoon in Ottawa's Lowertown neighbourhood.

Muhab Sultanaly Sultan, 23, of Calgary, is wanted for second-degree murder in connection with Jeremy Cook's shooting death last Sunday. (London Police Service) Rideau River and ran into trouble in the water, so two officers jumped in the river to try to rescue him. He then slipped under the water, police said. Police said he then tried to swim across theRiver and ran into trouble in the water, so two officers jumped in the river to try to rescue him. He then slipped under the water, police said.

The Ottawa police major crimes unit said it started investigating the case overnight and London police confirmed they are investigating whether Sultan is the subject of the river search.

"London Police Service Major Crime Section members are monitoring the Ottawa Police Service missing person investigation and are working with their counterparts there in an effort to determine whether the missing man is in fact Muhab Sultanaly Sultan," the London police news release said.

Ottawa police also said they apprehended and released the passenger of the vehicle that struck the officers.

Last week, London police said they are looking for a second suspect in Cook's death. He is described as a black male with very short hair. He was last seen wearing a black jacket or shirt and a fitted cap.

A third man, who got out of the vehicle just before the London shooting, is being asked to contact police and identify himself.

Anyone with information about the Rideau River search or Sultan's whereabouts is asked to call London police at (519) 661-5670 or Crime Stoppers at 1-800-222-8477. Information can also be sent in online anonymously to www.londoncrimestoppers.com.