East Lansing police say Dominique Nolff was pronounced dead at 9:23 a.m. Saturday from multiple gunshot wounds.
The second shooting victim, also 20, has been treated and released from a hospital.
Officers were called about 8:50 p.m. Friday to a report of a shooting at the Cedar Village apartment complex. Nolff and the other student were found inside one of the apartments.
Nolff was from Middleville. The other victim is a Grand Haven resident.
East Lansing police say the suspect being sought was believed to be in his 20s and that the shooting "does not appear to be a random act."