A primary school teaching assistant has been suspended after a colleague discovered white powder in her bag and reported it to the police. It has been reported that Lisa Heath, 45, an assistant at Willowtown Community Primary School in Gwent, had been carrying Class B amphetamines after police were called and quizzed her. She initially denied the drugs were hers, saying they had been planted on her, but later changed her story, accepting a caution for possession. Lisa Heath, 45, an assistant at Willowtown Community Primary School, Gwent (pictured), admitted carrying a Class B drug on the premises and has now been suspended from teaching . A spokesman for the school told The Sun that Miss Heath had been suspended, adding that she was being dealt with 'through the appropriate internal channels.' Gwent Police confirmed its officers were called to the school in Ebbw Vale on March 19 after receiving reports a controlled substance had been discovered on the premises. A police spokesperson added: 'A 45 year old woman voluntarily attended Tredegar Police Station where she received a caution for possession of a controlled substance (class B).' Blaenau Gwent Council has confirmed that the school immediately suspended the member of staff following the incident. A spokeswoman for the local authority said: 'We take such incidents extremely seriously and this matter is now being dealt with by the school and its governing body, together with support from the council, through the proper internal procedures. We are unable to comment further.' The maximum penalty for possession of amphetamines is 5 years in prison plus a fine. For supply the penalty is up to 14 years imprisonment and a fine. If the amphetamines are prepared for injection they become class A drugs and increased penalties apply. There is no indication this was the case with Ms Heath. When a reporter from the paper went to Ms Heath's home, a man claiming to be her son emerged and denied that she had been suspended or found with drugs. Most amphetamines (pictured), a form of chemical stimulant, are Class B drugs, meaning the maximum penalty for possession is five years in jail plus a fine . He also threatened to attack anyone going near the property with a hammer. Willowtown has 379 pupils aged between three and 11 years old, with 15 full-time members of staff, supported by four part-time teachers. Ebbw Vale, the area in which the school is located, is among the most deprived in Wales, and a third of the pupils qualify for free school meals, above the Welsh average of around 20 per cent.
Lisa Heath, 45, quizzed by police after colleague saw white powder in bag .
Assistant at Willowtown Primary School initially said drugs weren't hers .
But later changed her story and accepted a caution for possession .