PROVIDENCE, R.I. -- A massive manhunt is underway after a shooting left two people dead and eight others injured at a Brown University building on Saturday afternoon, officials in Rhode Island said.

Providence Mayor Brett P. Smiley said the shooting, which happened at the school's Barus & Holley building, was first reported at 4:05 p.m. local time.

An official briefed on the investigation told ABC News that preliminary information indicates that the shooting occurred in a engineering and physics building classroom, where a study group was taking place.

Six of the eight people injured are in critical but stable condition. One person is in stable condition while the eight is in critical condition.

Rhode Island Hospital is on lockdown but is still accepting emergency department patients

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