An MI5 officer giving evidence in the trial of alleged Manchester bomb plotter Abid Naseer today told a court he did not think his behaviour was suspicious.
'Officer 1661' said he followed Naseer and two other alleged co-conspirators around Liverpool in early 2009.
The court heard the trio visited locations such as a Tesco supermarket.
Naseer, who is representing himself, asked the officer if anything he witnessed caused him to be alarmed or suspicious, to which he replied "no".
Photographs of Naseer's 'co-conspirators' posing in front of locations around Manchester City Centre, such as the Arndale Shopping Centre, St Ann's Square and the City's Cathedral, were shown in court for the first time.
Prosecutors said while they may appear like harmless holiday snaps, they were actually part of a reconnaissance mission as they decided upon their intended target.
After a most unusual trial in Brooklyn, jurors now must decide whether Abid Naseer plotted to blow up a Manchester shopping centre.
Osama bin Laden was sent letters updating him of the progress of terror cells in the UK, New York and Copenhagen, a US court has heard.
A man charged with drawing up plans to carry out terror attacks in Manchester, New York and Copenhagen is due to go on trial in the US.