A powerful Indian politician was sentenced on Saturday to 14 years in prison for embezzling 37 million rupees from a state government’s treasury while he was the state’s top elected official.

The politician, Lalu Prasad Yadav, was convicted of embezzling the equivalent of $570,000, to buy fictitious medicines and cattle fodder while he was chief minister of Bihar State from 1990 to 1997.

Mr. Yadav, who already had been convicted three times in related cases, was also fined $92,307.

Eighteen former Bihar State officials, contractors and suppliers were also sentenced in the case to jail terms ranging from three and a half to five years.

Mr. Yadav, 69, who served as India’s railways minister from 2004 to 2009, was shifted to a hospital from a prison earlier this month, after he complained of chest pains in Ranchi, the capital of Jharkhand State.