BREAKING: Islamic State claims responsibility for Brussels blasts: news agency close to group https://t.co/3S1jpfXBTx— Reuters Top News (@Reuters) March 22, 2016
Last Friday, a suspect in the November 13 attacks throughout Paris was captured in Brussels.
UPDATE: According to NBC News, the claim is legit.
NBC NEWS: U.S. Counter-terrorism officials say the ISIS claim of responsibility for the Brussels attacks seems genuine. @RWindrem reports— Tom Winter (@Tom_Winter) March 22, 2016
This post has been updated.