The National Transportation Safety Board will continue its investigation Sunday into what caused a ferry to crash into the Staten Island terminal in New York.

At least 36 people were wounded when the Andrew J. Barberi crashed Saturday morning.

While the NTSB is not mandated to look into all marine accidents, it sent seven investigators down from Washington, D.C., to gather facts because the ferry was involved in another crash in October 2003. That crash killed 11 people and wounded 42.

“We felt that since there had been a previous accident involving the Andrew J. Barberi, we wanted to come back and see if there are any recurring issues that may have been left over from that,” NTSB member Robert Sumwalt said late Saturday night. “I don’t have any reason to believe that that is the case.”

Officials have already conducted alcohol tests on crew members — a routine procedure in crash investigations. Those results came back negative, Sumwalt said.

The crew will also be tested for drugs, which is also a routine process.

Officials will spend about four to seven days at the site of the crash, interviewing passengers and crew and conducting inspections. The results of the completed investigation will not be available for at least a year, Sumwalt said.

The ferry boat apparently had mechanical problems when it crashed, authorities said.

(Source: CNN)