Christopher Musa, chief of defence staff (CDS), says it is a treasonable offence for #EndBadGovernance protesters to fly foreign flags in the country.
Musa spoke shortly after a meeting with President Bola Tinubu at the State House in Abuja on Monday.
The trend was first observed in Kano on the first day of the protest.
Protesters waved Russian flags, calling on President Vladimir Putin to intervene in the country.
On Sunday, a faction of protesters arrived in Jos, the Plateau capital, with Russian and Japanese flags, forcing local protest organisers to conclude the march early.
The latest batch of flags were seen on Monday in Kaduna, Kano, and Abuja.
Musa said people caught with the foreign flags will be tried for treason
