The University of Maryland chancellor is expected...

The University of Maryland chancellor is expected to approve several changes intended to toughen the school’s one-year-old program of drug testing for student athletes.

Proposed changes include increasing the number of unannounced tests for each athlete and altering procedures so that monitors observe as players provide urine samples.

The program has come under scrutiny since the cocaine-induced death of Maryland basketball star Len Bias on June 19, two days after his selection second overall in the NBA draft by the Boston Celtics.

Two of his teammates, Terry Long and David Gregg, were indicted Friday on cocaine possession charges stemming from a grand jury investigation into Bias’ death, sources said. A former Maryland student, Brian Lee Tribble, was indicted on multiple drug charges, including distributing cocaine.

Maryland has just concluded the first year of its drug testing program, “and the first year of everything, including marriages, is experimental,” said Athletic Director Dick Dull.

While university officials believe the program has been a deterrent to drug use, they also believe “it probably needs to be improved and refined,” Dull said.