Detectives last night raided a home in Boston in connection with the explosions at yesterday's marathon which killed three and injured more than 150.
Authorities are still unsure who was behind the blasts - which have been described as small, home-made devices - but have a number of leads which they are following.
Agents, including the FBI and bomb disposal officers, swooped on an apartment in the suburbs of the city after a man, said to be of Saudi origin, was arrested at the scene..
The 20-year-old suspect is under police guard in hospital, where he is being treated for burns and shrapnel wounds to his legs, after he was tackled to the ground by a civilian who believed he was acting suspiciously.
A law enforcement source told CBS: 'They see him running away from the device. Now, a reasonable person would be running away. But this person had noticed him before. This is a civilian -- chases him down, tackles him, turns him over to the Boston police.
Read more:
http://www.dailymail.co.uk/news/art...tudent-acting-suspiciously.html#ixzz2QdRX0Rj2
Follow us: @MailOnline on Twitter | DailyMail on Facebook