Hundreds of Indonesian rescuers were racing Tuesday to find 10 hikers who went missing after a volcano eruption that killed 13 people.

"The total number of people who have died is currently 13 people. The 10 missing hikers are still being searched," Abdul Malik, head of Padang Search and Rescue Agency told Agence France-Presse, adding the bodies of the two additional dead hikers were found late Monday.

Thirteen dead hikers were found Monday near the crater of Mount Marapi on the island of Sumatra, with rescue officials announcing 11 deaths the same day and two more on Tuesday.

Others were found alive and carried down the mountain in arduous rescue efforts hampered by further eruptions and bad weather.

Five of the dead had been brought down the mountain for identification while eight bodies had been found and were being brought down in bodybags, he said.

Images shared by national search and rescue agency Basarnas showed a rescue team of six in orange jackets and hard hats carrying a body down the side of the volcano.

Those killed were severely burned and forensic workers were preparing to identify the dead by dental and fingerprint records, or based on marks on their bodies, Eka Purnamasari, an official from the West Sumatra police medical unit, said.

Very much active

The volcano spewed an ash tower 3,000 meters — taller than the volcano itself — into the sky on Sunday.

The volcano was still erupting on Tuesday morning, according to officials, hampering the rescue efforts of more than 200 personnel.

Rescuers were attempting manual evacuations, walking to the top of the volcano and evacuating the victims on stretchers because of ongoing eruptions and poor visibility, said Hendri, a local rescue official who like many Indonesians goes by one name.

Ahmad Rifandi, head of Marapi's monitoring post, told AFP Tuesday it had observed five eruptions from midnight to 8 a.m. local time.

"Marapi is still very much active. We can't see the height of the column because it's covered by the cloud," he said.

Volcanic ash was still falling around an information post at the base of the mountain where Marapi was not visible, according to an AFP journalist.

The head of Indonesia's volcanology agency, Hendra Gunawan, said Marapi has been at the second level of a four-tier alert system since 2011, and a three-kilometer exclusion zone had been imposed around its crater.