Detectives investigating the murder of father-of-three Redwan El-Ghaidouni in Hillingdon, Greater London, have released CCTV footage of the suspect.
Appearing on BBC Crimewatch, they appealed for help after the 38-year-old was shot dead on his driveway in February.
A reward of £50,000 has been offered for information leading to the arrest and prosecution of the person or people responsible for Redwan’s murder.
“We have released CCTV footage of the man we believe murdered Redwan making off after the shooting and also visiting the area before the incident. He had been seen in Saunders Road, which is next to Vine Lane, numerous times in the days before the murder – we believe these were failed attempts by the suspect to get an opportunity to shoot Redwan,” said Detective Chief Inspector Noel McHugh.
“He was wearing a distinctive dark hooded top with a large motif on the front – do you recognise him? Or the logo on his top?
“I would urge anyone who can help to come forward – there is a large reward available and we hope this may encourage people to tell us what they know in the strictest confidence.”
Redwan was shot as he sat in the driver’s seat of his car on the driveway of the home he shared with his partner and three children just before 7pm on Tuesday, 3 February.
After he pulled into his driveway, he was approached by a man who shot him multiple times through the car window.
The suspect ran off through an alleyway that leads to Saunders Road. He turned the corner where he was caught on a CCTV camera before running in the direction of Dowding Road.
He was wearing the distinctive hooded top as well as dark bottoms, dark gloves and dark shoes or trainers.
CCTV also shows the suspect – again wearing the top with the large motif – in Saunders Road on Saturday, 31st January and Monday, 2nd February.
Officers are also still keen to hear from anyone who can identify a man seen an hour before Redwan was murdered, at about 18:00hrs, standing on the verge by a telegraph pole at the junction of St Andrews Road and Vine Lane. This is opposite Redwan’s house.
Anyone with any information is asked to call the incident room on 020 8785 8099 or Crimestoppers anonymously on 0800 555 111 or via crimestoppers-uk.org.