DENVER — As reports emerged of a suspicious package sent to a university the suspect in the Colorado theater shooting once attended, the first memorial service was held for a victim of the massacre.

The University of Colorado Denver said Wednesday that the U.S. Postal Service delivered the package Monday, and it was immediately investigated and turned over to authorities within hours.

It wouldn't confirm its contents or whether it was sent by former neuroscience graduate student James Holmes. However multiple media outlets, citing unnamed sources, reported Holmes sent a notebook with drawings and descriptions of an attack.