The beach was temporarily evacuated Saturday after a woman reported that an explosion sent her flying from her beach chair into a jetty 10 feet away.
Kathleen Danise, 60, was enjoying a warm sunny weekend day at Salty Brine Beach when authorities said she was violently thrown from her chair and onto the rocks of a jetty around 11:15 a.m.
"There was a bang first, movement in the rocks, then eruption, all simultaneously," said Laura Demartino, who is the victim's sister.
The U.S. Coast Guard was at the beach on Tuesday removing an underground cable that used to power navigational lights in the harbor.
Officials said the cable hasn't been active since 2007.
The Coast Guard made the decision to remove the portion of cable that runs under the beach as a precaution but they are confident it didn't cause the blast.
"Right now we believe it's a dead cable but we're going to continue investigating and trace it back to see if there's possibility that it could have become energized. We haven't ruled that out completely," said Rhode Island State Police Lt. Col. Todd Catlow.
Danise is recovering after having two fractured ribs, and bruises.
Copyright 2015 WFSB (Meredith Corporation). The Associated Press contributed to this report. All rights reserved.
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