Luton murdered teenager died from 'stab wound to heart'
A teenager who was murdered in Luton died of a stab wound to the heart, a post-mortem examination has revealed.
The body of an unnamed 19-year-old man was found in Hastings Street at about 00:40 BST on Friday.
Bedfordshire Police arrested a 43-year-old man on suspicion of murder shortly afterwards. He has since been bailed pending further enquiries.
Officers said they were keen to speak to six potential witnesses after analysing CCTV footage.
The suspect was arrested at a house yards from where the teenager was found, police said.
One witness told the BBC he saw the teenager staggering down the street shortly before police arrived.
A Vauxhall Astra is being examined by forensic officers as part of the investigation and a nearby house has also been searched.
Police want to trace six potential male witnesses to the attack, who were spotted around the Hastings Street, Elizabeth Street and Windsor Street areas.
Four of the men wore hooded tops, with one man described as black and another white with ginger hair.