A state of emergency has been declared by President Martin Vizcarra in the area surrounding the Ubinas volcano. According to Peru's National Emergency Operations Center (COEN), ash from the volcano covered 617 schools and 20 health centres in the southern region of the Andean nation in South America. The latest report from the Geophysical Institute of Peru (IGP) said the volcano, which is located in the Moquegua region, is still emitting moderate levels of ash. Specialists said no explosions have been recorded in the last 24 hours but there have been 266 earthquakes. The Minister of Health, Zulema Tomas, said the government is assessing relocating citizens living in the areas affected. She explained there was an initial evacuation, but then citizens returned to their homes because the emission of gases from the volcano began to decrease. She said: "At first there was a small evacuation, but then they returned to their homes. "People from several villages do not want to abandon their houses. "The possibility of relocating them is being analyzed." The minister added the main gases coming from the volcano are sulphuric acid and arsenic. She said: "The first is what produces problems of bronchial obstruction and eye irritation." More than 3,000 masks, glasses, and eye drops have been sent to the areas of San Juan de Tarucani (Arequipa), Ubinas (Moquegua) and Puno. The National Institute of Civil Defense (Indeci) ordered the first evacuation after recording two explosions on Friday. These led to ash being spewed within a radius of 25 km (16 miles), which affected at least eight inhabited areas. Indeci chief Jorge Chavez told local radio station RPP at the time: "Actions are being taken for around 1,000 people living in the areas around the Ubinas volcano, so they can be relocated to shelters already provided for in contingency plans." The education ministry added schools in towns near the volcano, which is located about 1,200 km (745 miles) south of Lima, suspended classes. Southern Peru, an area where there are important mining sites, is also home to a dozen active volcanoes. Peru is located within the Pacific Ring of Fire. This is an area with a high incidence of earthquakes and volcanic activity.