Four more held in connection with Woolwich attack on British soldier

Fears were growing last night that the Woolwich attack was carried out by a home-grown Islamic terror cell far bigger than originally estimated.

Over the weekend armed counter- terrorism officers arrested four young men within 24 hours on suspicion of conspiracy to commit murder.

The dramatic daytime arrests by police wearing balaclavas means there are now six terror suspects being held over the death of Drummer Lee Rigby.