DHAKA: A volcano has been activated in central Costa Rica, belching smoke and ash up to 3,000m into the air.

Hundreds of people went to hospital, complaining of breathing difficulties and skin problems, BBC reports on Saturday (May 21).

However, some schools were closed and some flights into the country cancelled or diverted.

People in the capital San Jose said that, about 45km west of the Turrialba volcano, layers of ash had coated buildings and cars and there was a fierce smell of sulphur.

Costa Rica's National Emergencies Commission has advised people to wear masks and tight clothing to protect their lungs and skin.

‘It seems to me to be the strongest (Turrialba) eruption in the past six years,’ volcanologist Gino Gonzalez told.

Costa Rica is home to dozens of volcanoes, but most of them are inactive.

BDST: 0948 HRS, May 21, 2016
SAS/AKA