Hong Kong (CNN)At least one person is dead after an oil tanker caught fire south of one of Hong Kong’s main islands.
The fire broke out aboard a vessel transporting kerosene as it passed near Lamma Island around 11:30 a.m. local time, a police spokeswoman told CNN.
Crew on board jumped into the water as the fire engulfed the ship, 21 of whom had now been rescued by marine police boats, the spokeswoman said. One dead body was also pulled out of the water.
Police could not confirm reports there had been an explosion before the fire.
The 11,000-ton, Vietnamese-flagged Aulac Fortune was en route to Hong Kong from the southern Chinese port of Dongguan, according to ship tracker Marine Traffic.
Residents of Lamma and nearby Lantau Island reported hearing a loud bang and hearing their windows and other furniture shake.
“My windows shook really badly but (there) was no wind,” Lamma resident Deb Lindsay said. “I thought there had been an earthquake!”
Lindsay said there were three bangs, an initial “really big one” followed by two smaller apparent explosions minutes later.
Tracy Lockwood, a Lamma resident, said she was teaching across the Lamma Channel in Aberdeen, on the southern part of Hong Kong island, and felt a “big wallop on the windows.”
“I thought it was just a weird big gust of wind but it must have been (the) explosion,” she added.
Parts of southern Lamma are a protected nesting site for green turtles, a highly endangered species. Lamma has also struggled in the past to deal with pollution and debris flowing onto beaches from the sea, and many residents expressed concern the tanker fire would see the island’s coast flooded with oil.
According to the International Tanker Owners Pollution Federation Limited (ITOPF), non-persistent oils, such as kerosene, “will dissipate rapidly through evaporation.” Despite this, the ITOPF notes that impacts from non-persistent oils may still include, at high concentrations, “acute toxicity to marine organisms.”
As well as the endangered green turtles, Hong Kong’s waters also host a critically endangered colony of white dolphins, already under pressure from pollution and land reclamation activity.
Hong Kong’s Environmental Protection Department did not immediately respond to a request for comment.