The UK Maritime Trade Operations Centre is reporting two fresh attacks against commercial shipping in the Strait of Hormuz.

The agency said a tanker traveling 21 nautical miles northeast of Khasab, Oman, reported Friday “seeing a large splash and explosion in close proximity to the vessel.”

“No damage to the vessel has been reported at this time. Authorities are investigating. Vessels are advised to transit with caution and report any suspicious activity to UKMTO,” it said.

The UKMTO added that it received another report from a ship traveling 11 nautical miles northeast off the coast of Lima, Oman, that it was “struck by an unknown projectile which has caused damage to the engine room.”

“There are no reported casualties or environmental impact,” the UKMTO said.