RJD has five MLAs in the 81-member Jharkhand Assembly.
"The Arjun Munda government has collapsed following divorce between BJP and JMM," he told reporters here.
The best possible scenario will be that the state Assembly should be put under suspended animation for the time being so that the option of formation of a secular government could be explored, he said.
The BJP-led government in Jharkhand collapsed after coalition partner JMM withdrew support to it on Monday. Chief Minister Arjun Munda yesterday resigned and recommended dissolution of the Assembly.