A 60-year-old man stabbed to death in south London last night has become the capital’s 145th murder victim this year. A 50-year-old was arrested at the scene following the stabbing but was taken ill in custody and transferred to hospital where he is stable. The attack happened at 9:30 pm on Monday night in Thornton Heath, south London; and the victim, whose relatives have been informed, was found in the street. Officers are appealing for any witnesses to come forward to help the investigation. […] Youth workers, police and prosecutors say that witnesses are unwilling to give evidence because they...