Cleveland police search for Steve Stephens who they say posted videos on Sunday which include claims of other killings.
Extensive inquiries find no motive for Khalid Masood and senior officer says there is no intelligence to suggest more attacks are planned.
Uk Prime Minister Theresa May says Westminster assailant was British-born and known to the Bristish intelligence services. Eight arrested in six counter-terrorism raids in Birmingham and London this morning, with four confirmed dead in Westminster terror attack
Voices from all walks of life are uniting to spread the word about the importance of getting back to more face-to-face conversations and fewer “likes” and tweets.