A pleasure boat exploded in Stanley Bridge, P.E.I., Wednesday afternoon.

One person suffered burns, but all four people on board swam to safety, RCMP say. 

The injured person was taken to hospital. The boat was hauled to shore.

The boat exploded and the wreckage was pulled ashore.

The wreckage was pulled ashore. (Robyn Miller/CBC)

Sgt. Andrew Blackadar said a 911 call came in shortly after 4:30 p.m.

"A 911 caller reported that a boat had just exploded near the shore and [they] saw some individuals jump off the boat. They all swam to shore," he said.

"The boat burned."

He says they started to swim back, but were picked up by a local fisherman and taken ashore.

Phyllis Carr, owner of Carr's Oyster Bar, heard the explosion.

"Just a big boom. It was like a gas tank exploding or something. Next thing there was flames and people jumping overboard,” Carr said.

She said the two men and two women on the boat were able to make it to safety.

"A lot of the fishermen are used to reacting quickly to events because anything can happen on the water, so as soon as they heard the sound they were right over there and very helpful,” she said.

Carr spoke with the boat passengers. "They just said the boat was kind of sputtering and they were a bit concerned about that, but it was so quick they didn't even have time to know why," she said. 

"We had customers on our deck. It was quite a shock because of course you're looking out at this beautiful scenery and then all of a sudden you see this boat burst into flames."

There's no word yet on what caused the explosion. The provincial fire marshal is investigating.