Thousands of Turks have filled the streets of Ankara to vent their anger at President Recep Tayyip Erdogan after 97 people were killed in the country's worst-ever terror attack.
Flags flew at half-mast across Turkey on the first of three days of national mourning declared by Prime Minister Ahmet Davutoglu, as questions grew over who ordered Saturday's bombings on a peace rally in Ankara.
Turkey's pro-Kurdish Peoples' Democratic Party (HDP), one of the groups that had organised the rally, said it believes the death toll now stands at 128.
The attacks have raised tensions in Turkey just three weeks before snap elections are due on November 1 and as the military wages an offensive against Islamic State jihadists and Kurdish militants.
With the country on edge, Erdogan issued a statement condemning the "heinous" bombings and cancelled a planned visit to Turkmenistan but he has yet to speak in public since the attack that shocked the nation.
On Sunday (local time), thousands of demonstrators thronged central Ankara's Sihhiye Square, close to the blast site by the city's main train station, to pay tribute to the victims.
Many of those gathered accused the government of failing to provide security at the ill-fated rally and several anti-government demonstrators shouted "Erdogan murderer" and "government resign!"
The premier's office said 97 people were killed when the bombs exploded just after 10am as leftist and pro-Kurdish activists assembled for the rally.
It added that 507 people were wounded, with 160 still in hospital and 65 in intensive care in 19 hospitals.
In an emotional address to the mourners in Ankara, the HDP's leader Selahattin Demirtas said that rather than seeking revenge people should aim to end Erdogan's rule, starting with the upcoming legislative elections.
Even before the attacks, the president was under immense political pressure after his Justice and Development Party (AKP) lost its overall majority in June 7 polls for the first time since it came to power in 2002.
Coalition talks failed and Erdogan called new elections for November 1. But to the disappointment of the AKP, opinion polls show the outcome may be little different to the previous ballot.
The Ankara death toll surpasses that of the May 2013 twin bombings in Reyhanli on the Syrian border that killed over 50 people, making the attack the deadliest in the history of the Turkish Republic.