The launch of the Atlas V rocket with the WorldView-4 satellite has been rescheduled until no earlier than next month, the United Launch Alliance (ULA) said.
According to ULA, the fire has not caused any damage to any facilities and all ULA employees are safe.
The launch of the WorldView-4 mission from the Vandenberg Air Force Base in the US state of California was postponed two times earlier this month because of a ground leak.
The WorldView-4 satellite is a high-resolution commercial imaging satellite built by Lockheed Martin Space Systems Company and owned and operated by DigitalGlobe.