Kenya’s police chief announced a ban on fresh opposition demonstrations called for Monday, after protests last week degenerated into riots.

“We will not allow violent demonstrations,” Inspector General of Police Japhet Koome told reporters on Sunday.

“The demonstrations they plan tomorrow (Monday) are illegal and will not be allowed,” he said, adding that his force was ready to keep the peace and would arrest anyone carrying offensive weapons.

But veteran opposition leader Raila Odinga, who has called for people to take to the streets on Monday and Thursday against President William Ruto over the high cost of living, remained defiant.

“I am asking our supporters and all Kenyans to come out and join the peaceful demonstrations,” he said at a church service on Sunday.