A 13-year-old boy in Colorado has been arrested over the murder of a grandfather who was shot dead while on a bus. Richard Sanchez, 60, was only a few blocks away from his house in Denver when he was killed on January 27 after he allegedly got into an argument with a teenager, according to Fox 31. He was shot at about 6.40pm at the intersection of South Federal Boulevard and West Mississippi Avenue but his family only found out he died after they attempted to file a missing person report days later. Sanchez was rushed to hospital but later...