Steps have been taken to isolate three STF camps in Kelaniya, Kalubowila and Rajagiriya.
Eleven STF personnel have been found infected with COOVID19 and some of them had been involved with VIP security.
It has been revealed that some persons from the camps had gone to the Peliyagoda fish market to get fish for their kitchens and contracted the virus.
Officers of the three isolated camps have been subjected to self-quarantine under strict health measures.