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How the NYPD are investigating Chelsea blast

Name: How the NYPD are investigating Chelsea blast
Uploaded: 2016-09-18T00:45:57-0400
Duration: 12 min 11 s
Description: Investigators are searching for clues in a Manhattan explosion that injured 29 people Saturday night. Authorities say the blast appears to be intentional. Former FBI official Dimitri Roberts joins CBSN to discuss the investigation.

Investigators are searching for clues in a Manhattan explosion that injured 29 people Saturday night. Authorities say the blast appears to be intentional. Former FBI official Dimitri Roberts joins CBSN to discuss the investigation.