NEW DELHI: Former Jharkhand chief minister and Jharkhand Mukti Morcha (JMM) leader Shibu Soren is on ventilator support and in critical condition, news agency PTI reported on Saturday, quoting sources.He has been admitted to Sri Ganga Ram Hospital in Delhi for over a month. He was hospitalised in the last week of June with a kidney-related issue, the PTI report said.Shibu Soren, 81, has been receiving regular treatment at the hospital for a long time. On June 24, Jharkhand Chief Minister Hemant Soren had visited the hospital and said, “He was admitted here recently, so we came to see him. His health issues are currently being examined.”Shibu Soren has led the Jharkhand Mukti Morcha for 38 years and is known as the founding patron of the party.Meanwhile, Jharkhand education minister Ramdas Soren was airlifted to Apollo Hospital in Delhi after suffering a brain stroke, PTI reported.