Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. 65 Killed in India Train Blast A passenger train in West Bengal state was derailed by an explosion and hit an oncoming train in a suspected attack by Maoist rebels VOA News 28 May 2010 Photo: ASSOCIATED PRESS An injured passenger is helped by a paramedic at the scene of a train crash near Sardiha, West Bengal state, about 150 kms (90 miles) west of Calcutta, India, early Friday, May 28, 2010. The overnight passenger train was derailed by an explosion then hit by another train early Friday as it traveled through a rebel stronghold of eastern India, officials said. A top government official said a number of people have been killed and scores injured. (AP Photo/Samir Mondal) Authorities in eastern India say a passenger train was derailed by an explosion and hit an oncoming train early Friday, killing at least 65 people and wounding more than 100 in a suspected attack by Maoist rebels. Officials warned the death toll could rise as rescuers struggled to reach a large number of passengers still trapped inside the mangled wreckage.  The Mumbai-bound express train, traveling from the northeastern city of Kolkata in West Bengal state, derailed as it was traveling through an area known to be a stronghold of Maoist rebels. Thirteen cars careened off the track and collided with a cargo train traveling in the opposite direction. Sabotage is suspected, but officials cautioned it is too early to say whether the Maoists, who have stepped up their attacks in recent months, are responsible. Prime Minister Manmohan Singh has called the Maoist insurgency, which has spread to 20 of the country's 28 states, India's most serious domestic security issue. The rebels, also known as Naxalites, are demanding land and jobs for the poor. Some information for this report was provided by AP, AFP and Reuters. .