A man is reportedly on the run after driving through busy main roads with a sledgehammer smashing bus windows.
The man reportedly started smashing windows on Abbeydale Road in Sheffield at around 3pm.
He is said to have driven his car into a number of other vehicles before reaching out and 'waving a hammer around'.
Footage circulating online shows a man in a black vehicle coming to a standstill alongside one bus, before waving the hammer and smashing at the driver's window.
According to one witness, an alarm on a bus nearby began announcing "driver under attack, please call 999".
At another point, the man reportedly left his vehicle to smash the front of a bus, reports The Star.
Witness Kelly Robinson said: "The bus alarm was saying "driver under attack, please call 999.
"I was on the end of Attercliffe Road heading into town.
"I was on the bus going the other way and our driver slammed on the breaks and ran over to help.
"Think someone was trying to smash their way on as there was more glass at the stop further back."
Police are conducting a search of the area.
Mirror Online has contacted South Yorkshire Police for a comment.
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