New video evidence shows a UK man pacing in front of a house 20 minutes before Monday’s deadly knife assault at a Taylor Swift-themed dancing class — a residence that authorities raided following the massacre.

Check out the video obtained by ITV, which shows a young man in a green sweatshirt walking back and forth in front of a property.

The attack killed three children and left five others in critical condition. Two adults are also in critical condition.

A witness stated that the man arrived by cab and did not pay for the ride.

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The identity of the suspected attacker, who has been arrested, has not been published, but it appears he is 17 years old. The suspect was born in Cardiff, Wales and relocated to the Southport region in 2013.

Taylor Swift is devastated by the incident, writing a heartfelt tribute to the victims and their families on her Instagram Stories Tuesday morning. She informed her fans that she was “completely in shock.”

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