PITTSBURGH (KDKA) – Fire crews were on the Parkway responding to reports of smoke inside the Squirrel Hill Tunnel.

On Twitter, PennDOT said there was “fire activity” on the Parkway between the Beechwood Boulevard exit and Edgewood/Swissvale exit. Dispatchers said they’re investigating reports of smoke on the inbound side of the control room building above the tunnel.

Power in the tunnel was partially out at one point, but the tunnel never closed. PennDOT said half of the lights were out in each direction of the tunnels

PennDOT said the smoke was because of malfunctioning electrical equipment.

(Photo Credit: KDKA)