Prince is being questioned by authorities.
Purple powder thrown at Blair in Commons
The House of Commons has resumed after purple powder was thrown from the public gallery during Prime Minister's Question Time, hitting Tony Blair on the back.
Two protesters from the Fathers 4 Justice group, who were guests of Labour peer Baroness Golding, have been arrested after one man hurled three missiles at Mr Blair while another held a poster bearing photographs.
Both were dragged away by security staff and subsequently arrested.
Baroness Golding has apologised to MPs for the incident.
