(CNN) US intelligence radars and sensors "picked up no indication" of an Iranian ballistic missile launch in the days surrounding a reported test, according to a Trump administration official familiar with the latest US assessment.

Iranian reports that the nation tested a new ballistic missile so far does not appear to be true, the official said, adding: "As far as we can see, it did not happen."

State-run broadcaster Press TV reported the launch on Saturday, according to footage broadcast on Iranian state television.

"Iran has released footage of the successful test-launch of its new ballistic missile, Khorramshahr, a few hours after it was unveiled during a military parade in the capital city of Tehran," Press TV said.

But the telemetry, or electronic signals, of a ballistic missile launch would have been picked up by a variety of US assets in the region who keep an around the clock eye on Iran's weapons activities, the official said.

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