One of the eight inspectors of the CBI's special crime branch of Mumbai is expected to begin the probe in the case and file a fresh FIR soon, official sources said.

Ruchi's alleged kidnapper Nilesh Jadeja was arrested from a guest house in Rajkot on Saturday morning by the Gujarat police.

Ruchi was kidnapped on April 6 from her school in Gandhinagar. The girl was found abandoned in a Gandhinagar-bound state road transport bus in Ahmedabad on April 16.

CBI inspector R K Kanhere is likely to be delegated with the additional charge of the Ruchi Chavda case as the SCB here was short-staffed, sources added.