NEW YORK -- Fire officials say the blaze that engulfed part of a building in New York City's South Street Seaport was caused by faulty electrical wiring.

Fire marshals also were looking Sunday into whether there was any structural damage from Saturday's blaze in the tourist-friendly historic neighborhood.

The fire started under Pier 17 on the East River. It covered about 100 square feet. Big plumes of black smoke wafted over the Manhattan skyline.

Fire Department spokesman Jim Long said the blaze "could have been a disaster." The pier was teeming with hundreds of visitors. But no one was hurt, and firefighters doused the flames in less than two hours.

None of the shops and restaurants along the pier was damaged.

The pier was reopened to visitors Saturday evening.

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  • Smoke rises off Pier 17 and floats along the East River toward the Brooklyn Bridge as firefighters fight a three alarm blaze at the South Street Seaport, Saturday, July 14, 2012, in New York. About 140 firefighters and the U.S. Coast Guard responded to the blaze that broke out about 4 p.m. Saturday. There were no injuries. (AP Photo/Lisa Tolin)

  • Smoke rises off Pier 17 and floats along the East River toward the Brooklyn Bridge as firefighters fight a three alarm fire at the South Street Seaport, Saturday, July 14, 2012 in New York. About 140 firefighters and the U.S. Coast Guard responded to the blaze that broke out about 4 p.m. Saturday. There were no injuries. (AP Photo/Lisa Tolin)

  • Spectators in the Brooklyn borough of New York watch a smoky fire on the opposite side of the Brooklyn Bridge as firefighters battle a three alarm blaze at the South Street Seaport, Saturday, July 14, 2012 in New York. About 140 firefighters and the U.S. Coast Guard responded to the blaze that broke out about 4 p.m. Saturday. There were no injuries. (AP Photo/Lisa Tolin)

  • Firefighters inspect PIer 17 in New York on Saturday, July 14, 2012. A three-alarm blaze at the South Street Seaport created a large cloud of smoke over the East River. (AP Photo/Mary Altaffer)

  • Firefighters work to extinguish a fire at PIer 17 in New York on Saturday, July 14, 2012. Firefighters battled a three-alarm blaze at the South Street Seaport that created a large cloud of smoke over the East River. (AP Photo/Mary Altaffer)