Who fled on these two naval ships?

A video is being shared on social media showing a group of persons boarding into two naval ships of the Sri Lanka Navy anchored at the Colombo Port.

It was reported that the two ships, SLN Sidurala and SLN Gajabahu ships departed the Colombo Port a short while ago.

However, attempts made to contact the spokesman of the Sri Lanka Navy to inquire about these reports  failed.