Witness videos show chaos, gunshots in Moscow concert hall

U.S. warned Russia about a potential terrorist attack in Moscow

01:36

Video inside Moscow concert hall shows terror as gunmen attack

01:21

Now Playing

Witness videos show chaos, gunshots in Moscow concert hall

02:06

UP NEXT

Video appears to show gunmen inside Russian concert hall

04:46

Dozens of casualties reported after attack on Russian concert hall

02:23

Video shows fire at scene of Moscow shooting attack

01:07

Putin speaks after winning fifth term

01:49

Putin says he supported Navalny swap for prisoners held in West

02:29

Putin says he supported Navalny swap for prisoners held in West

02:29

A look into Putin’s nearly 30 year reign over Russia

05:43

NBC News reports from inside a Moscow polling station as Russian presidential election begins

01:08

President Putin says Russia is ready for a nuclear war

01:15

Navalny’s widow calls on supporters to join an election day protest against Putin

01:03

Funeral for Alexei Navalny draws thousands of Russians

01:39

Roses, tears and a solemn goodbye: Mourners honor the memory of Alexei Navalny

00:40

Thousands attend Alexei Navalny funeral as Russian police monitor closely

04:12

Crowd chants his name as Alexei Navalny’s coffin is carried from church

00:30

Thousands gather as Alexei Navalny is laid to rest in Moscow

02:37

Long lines of mourners shown on Alexei Navalny’s YouTube channel

00:56

WATCH: Crowds applaud and chant as Navalny’s hearse arrives

00:31