A look at some previous extremist attacks in Western Europe
Brussels is on lockdown after a series of terrorist attacks struck the city Tuesday morning: one at a metro stop near the headquarters of the European Union and two at the airport. At least 31 people are dead and dozens more are injured. The Islamic State militant group claimed responsibility for the attacks.
Here's a look at some other notable attacks throughout Western Europe in the last decade.
Nov. 13, 2015
Paris was turned into a deadly combat zone as a series of explosions and shootings ripped through the city, killing at least 130 people. French President Francois Hollande blamed Islamic State and said his country was at war with the extremist group.
Jan. 7, 2015
A gun assault on the Paris offices of satirical magazine Charlie Hebdo kills 12 people. Al Qaeda in the Arabian Peninsula claimed responsibility for the attack, saying it was revenge for Charlie Hebdo's depictions of the Prophet Mohammed.
May 24, 2014
Four people are killed at the Jewish Museum in Brussels by an intruder with a Kalashnikov. The accused is a former French fighter linked to the Islamic State group in Syria.
May 22, 2013
Two Al Qaeda-inspired extremists run down British soldier Lee Rigby in a London street, then stab and hack him to death.
March 2012
A gunman claiming links to Al Qaeda kills three Jewish schoolchildren, a rabbi and three paratroopers in Toulouse, southern France.
July 22, 2011
Anti-Muslim extremist Anders Behring Breivik plants a bomb in Oslo, then attacks a youth camp on Norway's Utoya island. He kills 77 people, many of them teenagers.
Nov. 2, 2011
Offices of Charlie Hebdo in Paris are firebombed after the satirical magazine runs a cover featuring a caricature of the Prophet Muhammad. No one is injured.
July 7, 2005
52 commuters are killed when four Al Qaeda-inspired suicide bombers blow themselves up on three London subway trains and a bus.
March 11, 2004
Bombs on rush-hour trains kill 191 at Madrid's Atocha station.
Aug. 15, 1998
A car bomb planted by an Irish Republican Army splinter group kills 29 people in the town of Omagh, the deadliest single bombing of Northern Ireland's four-decade conflict.
July 25, 1995
A bomb at the Saint-Michel subway station in Paris kills eight people and injures about 150. It was one of a series of bombings claimed by Algeria's GIA, or Armed Islamic Group.
UPDATE
9:07 a.m. March 22: This article was updated with information about the terrorist attacks in Brussels.
This article was originally published on Nov. 13.
Sign up for Essential California
The most important California stories and recommendations in your inbox every morning.
You may occasionally receive promotional content from the Los Angeles Times.