The Antigua and Barbuda-flagged bulk carrier Cape Dao has sunk near the Strait of Hormuz, weeks after it was struck in a Sept. 23 attack that killed a crew member, Reuters and AGBI reported Wednesday.

Data from the International Maritime Organization, the U.N. shipping agency, showed the sinking, Reuters reported. AGBI, citing shipping industry sources, said the ship began sinking on Oct. 13, and a maritime notice on Wednesday said it had gone down.

The ship was hit by two unidentified projectiles about 15 nautical miles northeast of Khasab, Oman, damaging its engine room and causing a fire, AGBI reported, citing industry sources. One crew member was killed and 26 others were evacuated, AGBI said. The fire was put out the next day, and the ship was being towed toward a dry dock in Oman.

Photographs supplied to AGBI by shipping sources showed heavy fire damage to the ship's superstructure.

In a separate attack, the Singapore-flagged container ship GFS Pride also sank near the strait, both outlets reported. Singapore's Maritime and Port Authority said all 21 crew members were safely evacuated.

The GFS Pride and Cape Dao are the second and third ships to sink since the U.S.-Iran war began on Feb. 28, according to a Reuters analysis of IMO casualty data. At least 28 vessels have been targeted around the strait since Sept. 28, AGBI reported.

Iran has said it is stepping up strikes in response to the U.S. blockade of its ports and tougher sanctions, Reuters reported. The Cape Dao's UAE-based manager, Peonies Shipmanagement FZE, could not be immediately reached for comment, Reuters said.

"Both incidents underline concerns about the fuel and other substances remaining aboard," Arsenio Longo, founder of maritime intelligence company Huax, told AGBI. AGBI reported no evidence of a significant oil release.

What we know: The Cape Dao sank weeks after a deadly strike, and a second ship sank near the strait the same week.
What we don't: Who fired on the Cape Dao, and whether fuel from either wreck will leak.