"I don't know it," Soren replied to a media query that he was heading a minority coalition as alleged by the opposition.
The chief minister also denied having any knowledge when asked about West Bengal Chief Minister Mamata Banerjee's reported threat to pull out support to his government after the Lok Sabha elections.
The Trinamool Congress has two MLAs after Bandhu Tirkey and Chamra Linda joined the party along with their regional parties before the Lok Sabha elections.
The duo, who had then said that they continue to support the Soren government, had also said they would write to Assembly Speaker Shashank Sekhar Bhokta to make separate sitting arrangement in the House.