The Enforcement Directorate (ED) has made four fresh arrests in connection with the alleged illegal land grab-linked money laundering case against former Jharkhand chief minister Hemant Soren and others, official sources said on Wednesday. Those taken into custody under the provisions of the Prevention of Money Laundering Act (PMLA) have been identified as Antu Tirkey, Priya Ranjan Sahay, Bipin Singh and Irshad, they said. The ED had on Tuesday conducted searches at the premises of Tirkey and some others here. With these arrests, the total number of people taken into custody in this case has risen to eight. Soren, 48, was arrested by the ED in January shortly after he resigned as the chief minister. He is currently lodged in Birsa Munda jail at Hotwar here under judicial custody. Prime accused and former revenue department sub-inspector Bhanu Pratap Prasad, Mohammed Saddam Hussian and Afshar Ali have also been arrested. The probe against Soren pertains to an 8.86-acre plot of land