Unstable chemicals found in a disused school laboratory in Cork have been made safe by the Army Bomb Disposal team.

Dinitrophenylhydrazine was found during renovations at St Finbarr's College in Farranferris on the northside of Cork City.

The Army team arrived at the scene at 7.50pm last night.

A controlled explosion was carried out on the chemical at waste ground and the scene was declared safe at 8.50pm.

Dinitrophenylhydrazine is a chemical re-agent routinely used in laboratories around the country that can become unstable over time.

The Army Bomb Disposal team has been called out 120 times this year.

Other alerts have involved improvised explosive devices, conventional munition destruction such as old artillery shells discovered by members of the public and also suspect devices found to be hoaxes.