All of Boston shut down amid 'massive manhunt'

All residents of Boston have been ordered to remain inside as police carry out a "massive manhunt" for a suspected marathon bomber after his alleged accomplice was killed.

"We're asking people to shelter in place," Massachusetts Governor Deval Patrick told reporters. "Stay indoors with the doors locked, and do not open the door for anyone other than a properly identified law enforcement officer."

Meanwhile, the Boston marathon bombings suspect who was killed in a police shootout features a YouTube page listing links to men he identified as "terrorists" and Islamic teachers.

The Russian-language YouTube page of the dead suspect, identified as 26-year-old Tamerlan Tsarnaev, features various links to websites pulled by YouTube as well as to those on Islamic teachings.

One link, called "It's Only Sunnah," features a nearly hour-long speech by an Islamic teacher named Shaykh Feiz Mohammed, while other links are entitled "Terrorists" and "Islam".

Meanwhile, Tamerlan's 19-year-old brother Dzhokhar, the other suspect in the bombings who remains at large, has a social website in Vkontakte, the Russian equivalent of Facebook, stating that he went to elementary school in the Dagestani city of Makhachkala in southern Russia between 1999 and 2001.

The site says that Dzhokhar graduated from Cambridge Ringe & Latin School in Massachusetts in 2011, identifies "Islam" as his world view, and "career and money" as his main goals in life.

It also lists information about Chechnya and Islam as well as different mosques around the world, and retells some jokes about the unfair treatment of Muslims in the North Caucasus.

One of the jokes reads: "They have this riddle in school. There is a car. Inside are a man from Dagestan, a second man from Chechnya and a third man from Ingushetia. Question -- who is driving the car? Answer -- the police."