Former Jharkhand chief minister Champai Soren on Monday demanded a thorough probe into illegal land transactions in the Santhal Parganas region, and asserted that tribals will intensify agitation against Bangladeshi infiltrators in the state. The remarks of Soren, who switched over to the BJP from the JMM last month, came a day after Prime Minister Narendra Modi slammed the JMM-led coalition in Jharkhand for allegedly patronising infiltration, and said infiltrators were grabbing land and changing the demography of the region, besides committing atrocities on women. Infiltration poses a grave threat to the tribal society's existence. The Santhal Pargana Tenancy Act, meant to protect tribal land rights, is being violated. I demand a probe into all illegal land transactions in the region. The tribals are uniting and will oust the Bangladeshi infiltrators, Soren claimed. Earlier in the day, he participated in a tribal rally here and paid homage to their icons like Baba Tilka Manjhi and