A TEEN boy has been arrested on suspicion of murder after a man was stabbed to death and a woman seriously injured.
Omar Khan, 38, died at the scene of the attack outside a Tesco Express in Luton just before 2am on Saturday.

A woman was taken to hospital with serious injuries following the horror attack.
Police said yesterday a 16-year-old boy was arrested on suspicion of murder and grievous bodily harm in connection to the incident.
He remains in police custody for questioning.
Detective Inspector Justine Jenkins said: "No doubt the local community will be shaken by this horrific event.
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"We want to reassure everyone that our dedicated investigation team is working tirelessly to understand the circumstances around the incident and hold accountable those responsible for this senseless act.
"Our specialist officers are providing support to the family, and we kindly request that their privacy is respected during this difficult time.
"Our investigation is progressing, but we are still encouraging anyone who may have information to come forward.
"In particular, we are keen to hear from individuals who may have doorbell or dashcam footage from the area around the time of the incident.
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"In the strongest terms possible, we unequivocally condemn this type of violence.
"Knife crime has no place in our community and we will persist in our efforts to eliminate it and prevent the devastation it can cause."
Anyone with information or footage is asked to report online or call police on 101 quoting Operation Morcote.
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