Fire crews responded to the mall, located at 260 Exton Square Mall, just after 6:30 p.m. after a report of smoke coming from inside.
Thunderstorms were occurring in the area at the time of the incident.
No one was hurt, but the mall had to close early for the evening.
The incident was quickly brought under control.
The mall is expected to be reopened tomorrow.
West Whiteland fire officials say eight buildings, including the mall were struck by lightning.
No injuries and no structural damage reported, but power outages were reported.
700 customers lost power, but PECO says all power is back on.
