Military officials say they haven't confirmed the identity of a U.S. Marine seen throwing a puppy off a rocky cliff in a disturbing video.

The Marine's purported name was uttered in the video and has been widely circulated online. The name matches a 22-year-old lance corporal at Kaneohe Bay.

He's a member of the First Battalion, Third Marine Regiment, which returned from Iraq in October.

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A working phone number for the Marine or his family could not be found and individual Marines are not listed in the base directory.

Major Christopher Perrine said yesterday that he didn't know whether the Marine had been questioned since the investigation was launched Monday.

The 17-second video sparked sharp condemnation and widespread outrage.