Updated June 25 at 11:10 a.m.
The cyclist was transported to hospital and is being treated for serious but non life-threatening injuries, according to a tweet from Greater Sudbury Police at 9:25 a.m.
Police said earlier this morning they were still on scene investigating, and the roadway would be open shortly.
Anyone with information is asked to contact Greater Sudbury Police at 705-675-9171 or Crime Stoppers at 705-222-TIPS (8477) or www.sudburycrimestoppers.com.
There's been a collision involving a cyclist at the intersection of Regent and Austin streets in the city's South End, Greater Sudbury Police said in a tweet just before 9 a.m. Tuesday.
The extent of injuries is unknown.
"Motorists may experience delays in the area," said a press release. "Please slow down and make room for emergency responders."