WASHINGTON (AP) - President Barack Obama is being briefed on the developments in Boston Marathon bombing investigation by Attorney General Eric Holder, FBI Director Robert Mueller and several other national security officials.
Vice President Joe Biden is also attending the briefing in the White House Situation Room. Secretary of State John Kerry, Homeland Security Secretary Janet Napolitano and CIA director John Brennan are among the other top officials in the briefing.
The bombing suspects were identified by law enforcement officials as brothers from a Russian region near Chechnya. One suspect is dead and a second remains at large.
Thousands of officers have swarmed the streets in a manhunt that all but paralyzed the Boston area.
As part of the greater incident, Turkey's Interior Minister Muammer Guler says one of the suspects in the Boston Marathon bombing spent 10 days in Turkey 10 years ago but had no other links to the country.
Guler said Friday that Tamerlan Tsarnaev had travelled to Turkey with a Kyrgyz passport, along with three other people with the same last name in July 2003. He said they entered Istanbul on July 9, 2003, and departed the country from Ankara 10 days later.
Guler said Turkey has shared all information it has about the suspects with FBI officials.
Tamerlan Tsarnaev, 26, was killed in a shootout in Boston. His brother Dzhokhar is on the run.
Turkey, a Muslim country, has taken in hundreds of Chechens fleeing the conflict in Chechnya.