At least two people were killed and nine others injured in Saturday attack that occurred in engineering building on Providence, Rhode Island campus

A person of interest detained after a mass shooting at Brown University that killed two students and injured nine is being released after the investigation took law enforcement authorities in a “different direction,” officials said Sunday night.

The disclosure, made at a hastily convened late night news conference , represents a stunning turn of events in an investigation into killings that rattled the Ivy League campus, and came more than 12 hours after officials had announced that they had taken a person into custody.

The Rhode Island attorney general, Peter Neronha, said of the man who was detained earlier, there is “no basis to consider him a person of interest.”