A chemical tanker operating in the Indian Ocean was struck by an Iranian attack drone Saturday, a US Department of Defense official said, the seventh Iranian attack on commercial shipping since 2021.

“The motor vessel CHEM PLUTO, a Liberia-flagged, Japanese-owned, and Netherlands-operated chemical tanker was struck at approximately 10 a.m. local time (6 a.m. Greenwich Mean Time) today in the Indian Ocean, 200 nautical miles from the coast of India, by a one-way attack drone fired from Iran,” the official said in a statement.