Updated

A person of interest was in custody Thursday morning in a deadly hit-and-run that killed a correctional officer and injured three co-workers in northwest Indiana.

Police would not confirm whether the person they were questioning was a suspect.

Britney Meux, 25, and three other Lake County officers were out running Tuesday night in Crown Point, Ind., when they were hit by an SUV that took off. Meux, a mother of a 5-month-old baby, was pronounced dead at the scene.

Officer David Murchek, 25, has been released from the hospital, but Delano Scaife, 22, and Latasha Johnson, 34, remain hospitalized.

Murchek called 911 and reported hearing an engine rev just before being hit.

Investigators said there was no evidence the car attempted to brake and believe the crash may have been intentional.

The focus of the investigation is on a vehicle seen leaving the jail compound with its lights off just moments before.

The sheriff said authorities were looking for a dark truck or SUV that is missing the passenger side mirror.

Police in Indiana were expected to release surveillance video Thursday.

Newscore contributed to this report. 

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Person of Interest in Custody in Fatal Hit-and-Run of Correctional Officers: MyFoxCHICAGO.com