Police in Congo Brazzaville say they've discovered a cache of weapons in the capital Brazzaville -- in a district regarded a stronghold of the ousted prime minister, Bernard Kolelas.

The police said the weapons included grenades and rocket launchers.

A similar array of weapons was was said to have been discovered in the coastal town of Point Noire last month, where supporters of the former prime minister were arrested for allegedly preparing to attack an airport.