Search continues for Boston Marathon bomb suspect
Page last updated at 14:03 GMT, Friday, 19 April 2013 15:03 UK
- A major manhunt is underway for one of two brothers suspected to have carried out the Boston Marathon bombings. Police are searching a suburb just outside Boston called Watertown.
- The FBI released images of the suspects on April 18. Police are looking for 19-year-old Dzhokhar Tsarnaev (left), after he escaped a shootout where another suspect, his brother, died.
- The manhunt began when a police officer was shot and killed on the university campus of MIT, Massachusetts Institute of Technology. Two men carjacked a driver and drove away with the driver still in the car. The man was released unharmed.
- Three people were killed in Monday's bombs at the finish line of the marathon and more than 170 others were injured. This is a CCTV shot of the man police are trying to find. People across Boston have been told to stay indoors while the search continues.
- Superintendent Timothy P Alben warned people in the Boston suburb to not open their doors and said they would conduct a door-to-door, street-by-street search, due to a "fluid situation".
- A large area of Watertown was cordoned off and house-by-house searches conducted. Boston police Commissioner Ed Davis said he thought the man being hunted in Watertown was a "terrorist".
- The authorities in Boston have suspended the transport system and no cars are being allowed in or out of the Watertown area.