CLEARWATER — The driver of the boat that hit a Clearwater Ferry, killing one person and injuring several others Sunday night, showed no signs of impairment during a sobriety test, but investigators are working to determine whether to charge him with leaving the scene of a crash, officials said Monday.

Approximately 45 people were aboard the ferry, including two crew members, and six people were on the other vessel at the time of the crash. Twelve people were transported to a local hospital,

Horrific screaming' was heard in the background of 911 calls after a speedboat struck a Clearwater Ferry on April 27, leaving one dead and others injured, authorities have said. The U.S. Coast Guard also released a "mayday" call that they received.