A total of 362 people were arrested between Tuesday and Sunday, most of them for breaking the curfew imposed after clashes that left two dead and over a dozen injured, police said.
Sixteen of them were suspected of involvement in the killings, but the principle suspects in the deaths were not among those detained and were still being sought, the statement said.
Authorities imposed a partial curfew from Thursday in six of the city's townships, and thousands of security forces were deployed, state media reports said.
DPA