At least six people were killed and more than 200 injured as demonstrators contested President Joko Widodo's re-election.
Siti Aisyah, an Indonesian national, was freed after Malaysian prosecutors withdraw charges against her.
"Don't let the community suffer," one local official asked of the president.
The government said Instagram took down the account, but the company denied this.
Deasy Tuwo, 44, was found by her colleagues the following morning.
Indonesia's Meteorology, Geophysics and Climatology Agency urged anybody near the coastline to keep a distance of at least 500 meters.
"With the tsunami, we can only pray humbly and not celebrate much for this year's Christmas," Pastor Rusman Anita Sitorus said.
Rescue workers are still battling to reach the hardest-hit areas of Saturday's disaster.
Construction failures are thought to have caused the pit, which measures about 100 ft wide and 50 ft deep.
When you just can't face changing your ticket.
Investigators were trying to learn what caused the plane to crash into the Java Sea with 189 people aboard.
Anak Krakatau is notable for being the currently active part of the famous volcanic island Krakatau—which experienced a cataclysmic eruption in 1883.
"[The execution] is evidence that Saudi Arabia does not fulfil the terms and conditions pertaining to the protection of domestic workers," said Wahyu Susilo, executive director at Indonesia's Migrant Care advocacy group.
The accused face up to 15 years in prison for violating child protection laws.
"If there is looting again, we will quickly fire a warning shot and then shoot to immobilize," said Ida Dewa Agung Hadisaputra, a local military colonel.
It hasn't been determined if the earthquake was the cause of the eruption.
"It was after more than a week that I started to get very scared," he said.