Tajik officials said a detained suspect admitted links to the Islamic Renaissance Party of Tajikistan.
A Swiss citizen and a Dutch tourist were also killed in the collision.
The Tajikistan government has put a ban on wailing at funerals.
Could Russia benefit from U.S. attention waning or will China step in?
The 29-year-old will soon be eligible to succeed his father.
Stanislav Shushkevich explains how he signed the treaty that ended the USSR.
Tajik police also prevented 1,700 from wearing headscarves in a battle against radical Islam.
Rising temperatures have caused an environmental disaster, according to the IOM.
The $1.23 billion in aid will include communication systems, small arms, ammunition for aircraft and more.