To the bbc news at six. The metropolitan police have named The Third Man who carried out the deadly attack on London Bridge. He was 22 year old Youssef Zaghba, who was an Italian National of moroccan descent. Its emerged that last year italian authorities stopped him travelling tojoin so called is in syria. It is being reported in italy that he was placed on a watchlist and the british authorities were tipped off. Tonight there are questions about how one of the other two killers khuram butt slipped through the net after hed been investigated two yea rs net after hed been investigated two years ago. Our home editor mark easton reports. The faces of a self appointed death squad, we now know the identities of all three men who went on a Killing Spree in london on saturday night, today, Police Naming Youssef Zaghba is the third member of the gang, born in morocco, to a moroccan father and italian mother, 22 years old, he recently moved to these london where he worked in a restau ra nt, lo