CAIRO, April 29 (Reuters) - The United Kingdom Maritime Trade Operations (UKMTO) agency said on Monday that it received a report of an incident 54 nautical miles northwest of Yemen's Mokha.

It said that authorities are investigating, adding that vssels are advised to transit with caution and report any suspicious activity to UKMTO. (Reporting by Nayera Abdallah, Writing by Jaidaa Taha; Editing by Michael Georgy)