Released CCTV footage appears to show the Parsons Green bomb suspect on his way to plant his homemade device
The video obtained by the Press Association shows a figure dressed in grey carrying a distinctive white Lidl carrier bag.
The device which went off at Parsons Green Underground station on Friday appeared to be inside a bucket within the same type of bag.
The footage was obtained from a camera outside Ecco La Vera pizzeria on Vicarage Road in Sunbury-on-Thames.
The road, a few minutes walk from the foster home of the 18-year-old suspected of planting an explosive device on a tube train, leads to Sunbury train station.
He is believed to have passed the pizzeria just after 7am on Friday, some 80 minutes before the device went off at the District Line station on a train bound for Edgware Road, injuring 29 people.
The time shown on the footage is 7.30am on Friday but it is understood to be about 30 minutes fast.
Footage obtained by ITV News appears to show the same man leaving his nearby foster home while video obtained by the Sun apparently captures him a little further down Vicarage Road.