President Barack Obama says one American was killed on the plane over Ukraine. He says the airliner was shot down by a surface-to-air missile in an area controlled by Russian-backed separatists. 

The president called it a global tragedy in remarks from the White House, one day after Malaysia Airline Flight 17 crashed. 

He is calling for a credible international investigation

The plane was shot down near the border between Ukraine and Russia. The incident occurred one day after Obama announced broader economic sanctions against Russia for its threatening moves in Ukraine. 

U.N. Calls for Investigation 

The U.N. Security Council has approved a statement calling for "a full, thorough and independent international investigation" of a downed Malaysian Airlines plane in eastern Ukraine.

The press statement expresses the council's "deepest sympathies and condolences to the families of the victims, and to the people and governments of all those killed in the crash."

Council members stood in a moment of silent tribute to the 298 victims at the start of an emergency council meeting Friday morning.

The council called for an investigation "in accordance with international civil aviation guidelines and for appropriate accountability."

It stressed the need for "immediate access by investigators to the crash site to determine the cause of the incident."

The jetliner was shot down Thursday as it flew high above separatist-held territory.

U.S. to Send Transportation Expert to Crash Site

The National Transportation Safety Board confirms it is sending at least one investigator to the site of the crash.  

The FBI is also sending a team to the site, including an explosives expert.  

Nearly 300 people were killed when Flight 17 crashed.

U.S. officials believe the plane was brought down by a ground-to-air missile. It is still not known if any Americans were aboard the aircraft.

Global Health Community Loses 100

The global health community is reeling from the sudden loss of dozens of leading experts on HIV and AIDS.  

About 100 HIV/AIDS researchers and activists were on the Malaysia Airlines flight.

They were on their way to the International AIDS Conference in Melbourne, Australia.  

One of those who died in the crash was Joep Lange, a top AIDS researcher from the Netherlands and former International AIDS Society president.  

Medical experts fear the magnitude of this loss could severely affect any progress toward finding potential cures for HIV and AIDS.