An emerging power vacuum gripped the charred heart of the capital a day after Viktor Yanukovych and his political rivals signed a Western-brokered peace deal to end the ex-Soviet nation's worst crisis since independence from Moscow in 1991.
Key government buildings were without police protection and baton-armed protesters dressed in military fatigues wandered freely across the president's once-fortified compound.
"We have taken the perimeter of the president's residence under our control for security reasons," Mykola Velichkovich of the opposition's self-declared Independence Square defence unit told AFP.
The Ukrainian police appeared to retreat today from their entrenched defence of the pro-Russian government by releasing a statement in support of "the people" and "rapid change".
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"The police is at the service of the people and completely shares its aspirations for rapid changes," the interior ministry said in a statement.
"We pay homage to the dead."
The next test for the police will come tomorrow when a deadline expires for protesters to relinquish public spaces such as Independence Square -- the focal point of unrest that Yanukovych sparked in November by ditching an historic EU agreement in favour of closer ties with old master Moscow.
Yesterday's deal calls for holding of early presidential elections by December and forming of a unity government.
But signs of the authorities' slipping grip on power were heightened by a bold push by parliament leaders to force Yanukovych to stand down immediately and to immediately free the jailed Tymoshenko.