POLICE are still hoping to hear from witnesses to two incidents at the bus depot in Eastcott Road in April.
Officers say that they have not ruled out the possibility the break-ins are linked.
The first happened on April 14 when two Chubb fire extinguishers were stolen.
Two days later the premises were burgled again and extensive damage was caused.
Thirty one buses were attacked and £2,000 worth of CCTV monitors taken from the vehicles.
Police have descriptions of two men they want to speak to about the incident.
PC Troy Smith, of Swindon police, said: "We are not ruling out the possibility that the two incidents are linked and urge anyone recognising the two youths from the descriptions given or can help with any other information to come forward."
The suspects are both aged between 12 and 15.
One was white, slim, short, with straight ginger hair and a pale face.
He was wearing a desert camouflage-style baseball cap, a navy blue three-quarter length coat with an Ecko 72 unlimited logo on it, dark grey tracksuit bottoms with the same logo on and white trainers with yellow toe-cap patches.
The other was slim, wearing an unzipped white and navy blue hooded tracksuit top with the same logo across the chest, with another hooded top underneath, and a black baseball cap, blue tracksuit bottoms and white trainers.
Witnesses or anyone with information are asked to contact PC Smith on 0845 408 7000, or Crimestoppers on 0800 555111.
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