Firefighter injured in Dallas apartment explosion released from hospital, 2 still hospitalized

One of the Dallas firefighters injured in Highland Hills Apartment explosion has been released from the hospital.

Pauline Perez was released from Parkland Hospital Friday.

RELATED: Dallas apartment explosion injures 8, 3 firefighters in critical condition

Two other firefighters are still recovering at Parkland.

The cause of the explosion is still under investigation.

RELATED: Authorities still investigating cause of Dallas apartment explosion