A malfunctioning truck horn is the cause of a loud noise heard across Dorcan this afternoon. 

The truck was being worked on at Scania Swindon after it developed the fault. 

An employee at the industrial unit said: "We've brought in a truck with a malfunctioning horn.

"The police told it to come in and get fixed because it just wouldn't shut up. 

"It's nothing to worry about, we're in the process of getting it fixed now."