Lawmakers and government officials this week announced plans to scrutinize the handling of intelligence before and after the Boston Marathon bombings last month.

Four inspectors general announced on Tuesday that they would launch a joint investigation into the matter, and the House Homeland Security Committee said it would hold a hearing on May 9 to examine the issue.

Inspectors general for the intelligence community, the Central Intelligence Agency, the Justice Department and the Department of Homeland Security will take part in the review.

As for the House hearing, the committee plans to look at how law enforcement dealt with the crime scene after the bombings and how officials from all levels of government communicated with each other before and after the attack.

“As our nation recovers, it is imperative that we understand what happened, what signs may have been missed and what we can improve,” Homeland Security Committee chairman Michael McCaul (R-Texas) said in a statement.

Witnesses for the hearing include Boston Police Commissioner Edward Davis, Sen. Joseph Lieberman and Homeland Security Undersecretary Kurt Schwartz.

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