At least 10 paramilitary policemen were killed Saturday after Maoist rebels triggered a landmine blast in India's eastern state of Jharkhand, media reports said. The blast took place when a van carrying the security officers was passing through the Bariganwa forests in the western district of Garhwa, broadcaster NDTV reported. The blast was followed by a gunfight between the policemen and the rebels, the report said. Five more policemen were injured in the incident.