The U.S. attorney’s office for Kansas says a federal grand jury has returned a four-count indictment against a Kansas physician accused of unlawfully distributing prescription drugs.

Michael Schuster of Manhattan was indicted Wednesday on one count each of conspiracy to illegally distribute controlled substances, drug distribution, unlawfully distributing drugs to a person under 21 years old and using and maintaining a premise for drug distribution. Prosecutors are seeking forfeiture of money and property linked to the crimes.

Schuster’s attorney didn’t immediately respond to phone or email messages.

The 53-year-old doctor was initially charged April 23 in a criminal complaint that linked his clinic to drug overdoses by active-duty Fort Riley soldiers. The indictment does not allege overdose deaths and doesn’t reference soldiers.

Schuster remains jailed pending a detention hearing Tuesday.