The families of two of the London transport bombers have expressed their shock at their involvement in the incidents.
The family of Mohammad Sidique Khan - who died in the Edgware Road bombing, killing six other people - insisted he must have been "brainwashed" into carrying out such an evil act.
They also expressed their "deepest and heartfelt sympathy" to the victims, their friends and family.
In a statement through West Yorkshire Police, they urged anyone with information to contact detectives in order to "expose these terror networks who target and groom our sons to carry out such evils".
The statement went on: "The Khan family would like to sincerely express their deepest and heartfelt sympathies to all the innocent victims and their families and friends affected by this horrific and evil act.
"We are devastated that our son may have been brainwashed into carrying out such an atrocity, since we know him as a kind and caring member of our family."
Khan lived in Lees Holm, Dewsbury, West Yorkshire, with his wife and their young daughter.
The wife of King's Cross bomber Germaine Lindsay also condemned the atrocities. Samantha Lewthwaite (22) described Lindsay as "kind, caring and calming".
Jamaican-born Muslim convert Lindsay (19) blew himself up on a Piccadilly Line train between King's Cross and Russell Square, killing at least 26 people.
In a short statement, Ms Lewthwaite said: "I am the wife of Germaine Lindsay, and never predicted or imagined that he was involved in such horrific activities. He was a loving husband and father. I am trying to come to terms with the recent events. My whole world has fallen apart, and my thoughts are with the families of the victims of this incomprehensible devastation."