Police arrested four suspected Islamic rebels after a gunbattle on a busy street in the Indian capital, news report said Monday. The shootout took place Sunday night in the center of New Delhi after the police, acting on a tip, intercepted the suspected militants, The Indian Express reported. Police also seized explosives and weapons, including three kilograms of the explosive RDX, used in past bombings in India, six hand grenades and four detonators, the report said. "Their specific targets in the capital were not immediately known," senior police official Karnail Singh told the newspaper. "We are questioning them to learn their motives and contacts here."