The Federal Investigation Agency (FIA) has arrested four more people from across the country in raids.
The FIA says 16 cases have been registered against those arrested and the accused are alleged of posting hate speech against institutions.
According to FIA sources, out of the 16 arrested so far, six have been arrested from Punjab, six from Islamabad, three from Khyber Pakhtunkhwa and one from Karachi.
The FIA has also closed thousands of accounts with the help of PTA.