Video footage has emerged which may have captured the Parsons Green bomber leaving his home with the explosive device.
The CCTV shows a person walking from a house in Sunbury with a large Lidl bag, 90 minutes before the Friday (September 15) morning Tube blast, which injured 30.
The property in Cavendish Road, belonging to elderly foster carers Ronald and Penelope Jones, was later searched by armed police on Saturday (September 16) afternoon, while some residents living on the street were evacuated.
Police arrested an 18-year-old in Dover on Saturday morning, a development which was called “very significant” by Home Secretary Amber Rudd, while a 21-year-old was arrested after finishing a shift in a fried chicken shop in Hounslow on Saturday (September 16).
Both men are believed to have been fostered by Mr and Mrs Jones, who have received MBEs for services to children and families.
Footage obtained by ITV shows a man walking with a large Lidl bag at 6.50am.
The homemade bomb exploded on a packed eastbound train at around 8.20am, and within minutes the now infamous photos of the smouldering device appeared on social media.
Jim Adaway, a family friend of Mr and Mrs Jones, said they recently returned to foster caring to help resettle youngsters from overseas.
The 37-year-old said Mrs Jones had been struggling with one of the children in their care.
The couple, who have been foster parents for almost 40 years, have taken in up to 300 children, including eight refugees.
A second home in Surrey, this time in Stanwell, was raided on Sunday (September 17), with police linking it to the arrest of Farroukh.
Ms Rudd said police had made “good progress” in the investigation as she announced the country had been removed from the highest terror alert - from “critical” back down to “severe”.
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