Calgary police investigating weekend assault of radio host

Calgary police say they're investigating the attack of a prominent local radio host over the weekend. Rishi Nagar, a longtime news director for RED FM Calgary, says he was assaulted Sunday.  Surveillance video shows two men follow Nagar out of the Rio Banquet Hall, in the city's Horizon neighbourhood. A quick conversation is shown on camera before one man starts to throw a barrage of punches at the journalist.  Eventually, a bystander breaks up the attack and the two men flee