Story highlights The two people who died were in some sort of relationship, official says

Police are not giving out information about the identities of shooter, victim

It was an isolated incident, police spokesman says

(CNN) A fatal shooting at the University of South Carolina appears to be a murder-suicide involving two people who were in a relationship, a police spokesman said Thursday.

"From every indication that we have seen so far it appears to be a very isolated incident. It does have the appearance of being a murder-suicide," said Thom Berry of South Carolina's State Law Enforcement Division.

The two people involved had a relationship, but investigators are still trying to determine in what context.

Berry said the shooting occurred in a lab in the School of Public Health building and the shooter and victim were the only two people in the room.

Authorities weren't disclosing any information about the people who died in the early afternoon incident.

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