Rocket fuel has exploded at a Whitchurch-Stouffville aerospace and defence manufacturer leaving two injured, including one in serious condition.

The person in serious condition was taken to Markham Stouffville Hospital, then airlifted to a Toronto hospital.

Police said they got the call at 10:40 a.m. after the incident occurred at Cesaroni Technology Inc. on Stouffville Road, east of Woodbine.

Stouffville Road was just reopened.