Chandigarh, May 13 -- A day after a police constable cycling home from duty was killed by a speeding BMW on the road dividing Sector 9/10, Chandigarh police arrested a 26-year-old management graduate in the case.

The accused, identified as Ishan Shanker Roy, the son of a retired colonel and a resident of Sector 26, Panchkula, was allegedly performing dangerous stunts and racing with another BMW, when he hit the constable fatally. He was arrested on Monday after closed-circuit television (CCTV) camera footage and forensic analysis confirmed his involvement.

An eyewitness, Ashish Chaudhary, 24, said, "I was driving through Sector 10 and had reached the small chowk on the road dividing Sector 9 and 10 around 6.45 pm when I noticed two cars...