article_snippet.sent: The highly experienced officers serve with Surrey Fire and Rescue Service's Detection Identification and Monitoring team, which is called in to investigate gases.
article_snippet.sent: Fire crews fled the riverside home in Chertsey, Surrey (pictured) for their own safety after their specialist gas detectors sounded the alarm for dangerous levels of hydrogen cyanide .
article_snippet.sent: It records the gas being detected at 7.47am and 8.19am.
article_snippet.sent: Neighbour Mr Marsden recalled seeing the firefighters 'ducking in and out of the house in breathing apparatus.'
highlights_snippet.sent: Fire crews fled the riverside home for Fire crews own safety after Fire crews specialist gas detectors sounded the alarm for dangerous levels of hydrogen cyanide four hours after Zane was discovered by Zane mother.
  