(CNN) People have responded with extraordinary acts of kindness following Monday night's deadly bomb attack at an Ariana Grande concert in Manchester.

In the face of the attack, which left many concertgoers stranded, taxi drivers turned off their meters and began taking people away from the venue to safety.

One of them was Sam Arshad, owner of Street Cars Manchester, who realized something wasn't right when he drove past Manchester Arena around 10:30 p.m.

"I saw children screaming and running," he told CNN. "It was horrifying to see young children running, just to imagine what they were going through."

Arshad said it wasn't long before his company began receiving phone calls from "panicked parents".

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