ATLANTA (AP) — The Georgia Bureau of Investigation’s medical examiner plans further tests to determine the cause of Georgia Tech defensive lineman Brandon Adams’ death.

The 21-year-old Adams died Saturday. An autopsy was performed Monday.

Officer Stephanie Brown, an Atlanta Police spokeswoman, says the GBI’s medical examiner’s office needs more lab tests, including toxicology results, to determine the “cause and manner” of Adams’ death. Brown says in a statement to The Associated Press that police investigators are working with the GBI.

Georgia Tech says its seniors and team captains have decided to start spring practice as scheduled on Tuesday. The practice was closed to media.

Brown was a rising senior who was expected to be a key member of the Yellow Jackets’ defensive line under new coach Geoff Collins. Condolences were received from throughout college football programs and Georgia Gov. Brian Kemp also tweeted his condolences to the Tech athletic department and Adams’ family. A memorial service was held Monday night, with former and current Tech coaches in attendance, Adams’ teammates and his family.