Chief Judicial Magistrate (CBI cases) H S Khutwad committed the case, paving the way for start of the trial.
The court also provided copy of the chargesheet to Solanki. Earlier, after the copy was denied to him, he had moved the high court, but got no relief.
The CBI says in the chargesheet that the MP was involved in a criminal conspiracy that led to murder of Jethwa, who had raised voice against illegal mining in Gir forest, the only sanctuary of Asiatic lions.
Solanki was arrested on November 5 by CBI in Delhi after questioning. At present he is in judicial custody.
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Jethwa had filed numerous RTI applications about illegal mining in Gir. He had also filed a public interest litigation on the issue.
Solanki has also filed an application before the magistrate's court saying that police demanded a bribe of Rs 5,000 for not putting hand-cuffs on him. The court recorded his statement and sent it to the sessions court in a sealed cover along with case papers.