A car bomb exploded in a city in India's remote northeast Friday, wounding at least five people, three of them critically, officials said. The blast was the second attack in as many days blamed on separatist rebels who have been fighting for an independent homeland in the state of Assam for nearly three decades. "Five people were injured in the explosion on a car in the heart of Tinsukia town," said local administrator Absar Hazarika. "It is definitely a rebel attack." No one claimed responsibility for the attack but the police believe rebels of the United Liberation Front of Asom, or ULFA, were behind it and a bomb on bicycle that exploded in Gauhati on Thursday wounding two people.