Footage has emerged which appears to show a truck, apparently driven by Abdul Waheed Majeed on his way to carry out a suicide attack in Aleppo.
Majeed is said to have driven a lorry into a jail in Aleppo and detonated a bomb last week, and is thought to be the first Briton to stage a suicide attack in the war-torn state.
The family of a man suspected to be the first British suicide bomber in Syria was in the country doing humanitarian work for a charity, his family says.
Abdul Waheed Majeed is a father of two boys and a girl aged 18, 16 and 12. He was born and bred in Crawley and worked as a highways contractor.
His uncle, Mohammad Jamil, 65, said Majeed had never shown any sign of extremism. He said: "If the family knew about this, we wouldn't have let him go."
Arif Syed, a community leader in Crawley, said Majeed would phone or Skype his family every three days, but communication was lost with him about seven days ago.
"He has mostly been working with a charity on the refugee camps and distributing aid which he collected from here and other towns in the UK," Mr Syed said.
Anti-terror police are searching a house in Crawley, West Sussex, amid claims that a Briton staged a suicide bomb attack on a prison in Syria, last week.
He is believed to be 41-year-old Abdul Waheed Majeed, ITV News understands.
These are the first pictures believed to be of Abdul Waheed Majeed.
Police are searching the Crawley home of the man suspected to be the first British suicide bomber in Syria.
Counter-terrorism teams are searching a property amid claims that a Briton staged a suicide bomb attack on a prison in Syria.
British bomber said to have blown himself up in Syria is Abdul Waheed Majid. 41 years old from Crawley. Police searching house.
Officers are examining a house in Martyrs Avenue, Langley Green, Crawley, West Sussex, after reports that a UK jihadi, who used the name Abu Suleiman al-Britani, carried out the deadly bombing.
He is said to have driven a lorry into a jail in Aleppo and detonated a bomb last week, and is thought to be the first Briton to stage a suicide attack in the war-torn state, where increasing numbers of UK-born extremists have gone to fight.