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A committee of American geologists will visit Colombia to assist with monitoring of the Nevado del Ruiz volcano, as it continues to show signs of activity.
According to the geological group Ingeominas, a team of Americans will be working at the Volcanic Observatory in Manizales to monitor the volcano, which was at a red alert level until Monday.
Continued seismic activity has forced volcanologists to maintain an orange alert as the volcano remained unstable and continued to emit gases.
The Nevado del Ruiz volcano last erupted in 1985, wiping out the town of Armero and killing 25,000 people. It is estimated up to 500,000 people could be at risk from a major eruption.
