A court of appeals had vacated Tsarnaev's death sentence but it was reimposed by the conservative-dominated Supreme Court in a 6-3 vote.

During the call, Mateen also mentioned the Boston bombers -- Tsarnaev brothers, who carried out the Boston Marathon bombings in 2013.

These dreaded terrorists shook the world with their crimes. Here are 12 such terrorists and how they faced their end.

Other candidates in fray are Japan's Prime Minister Shinzo Abe, US President Barack Obama, Pakistani teenage education activist Malala Yous...

As US investigating authorities are trying to find out what transpired during the six month stay of Tamerlan Tsarnaev in Russia.

The lone surviving Boston bombing suspect Dzhokhar Tsarnaev was today transferred from a hospital to a prison medical centre in Massachuset...

Two veteran prosecutors, including an Indian-American, have been entrusted with the responsibility to nail the Boston bombings suspect.

An alchemy of police work, citizen involvement and technology yielded crucial big breaks in the Boston Marathon terror attack case and brou...

Chechen extremists pose a greater threat to Russia than they do to the US, counter-terrorism specialists say, though some of the groups hav...

While the Boston Marathon generates approximately $140 million every year, this year’s incidents threaten to sabotage the city’s economic r...