Residents along the eastern shore of Spain's La Palma island were ordered into lockdown Monday as lava flowing from the Cumbre Vieja volcano nears the sea.
The 1,250 Celsius degree lava may touch the Atlantic Ocean in the hours ahead, likely causing explosions and sending clouds of toxic gases over the island, Canary Islands emergency services warned on Monday morning.
"The population should follow instructions of the authorities and remain at home, with doors and windows closed, until the situation can be evaluated in the morning," they added.
In the early hours of Monday morning, the lava traveled past the southwestern town of Todoque which was evacuated a few days ago and was just 1.6 kilometers (roughly 1 mile) from La Palma's coast, according to emergency services.
Authorities have also called on residents within a 5-kilometer radius of the volcano to put in place further precautions, due to the possibility of new explosive eruptions which could cause glass to shatter.
The main airline for the Canary Islands, Binter Canarias, confirmed Monday that it will continue to suspend flights to and from La Palma airport while it monitors the situation.
All other air traffic at the airport was also canceled Monday morning, according to Spain's airport operator, AENA.
Monday is the ninth consecutive day of eruptions from the volcano, which has so far forced the evacuation of nearly 6,000 people, destroyed hundreds of homes and ravaged the island's economically crucial banana plantations.
The flow of lava has engulfed more than 230 hectares, the European Union satellite monitoring service Copernicus said, swallowing hundreds of houses as well as roads, schools and churches, and forcing thousands to evacuate.
No fatalities or serious injuries have been reported since the volcano's eruption, but about 15% of the island's banana crop could be at risk, jeopardizing thousands of jobs.