Primorsko council has removed the remains of a shipping container from a beach in the area, mayor Ivan Gaykov said. The council sent clean-up teams there this morning.
Gaykov said no signs of other pollution have been found nearby so far.
What happened before: Sea throws large metal structure onto North Beach in Primorsko
On Monday, 2 November, a shipping container was found on the rocks between Arapya beach and the Oasis campsite. Later that day, a tank was spotted in the sea off Ahtopol. Authorities say it is probably empty.
On Tuesday, 3 November, another shipping container surfaced in the sea off Sinemorets, BTA reported.