The authority ceased to exist after the 1950 law, no.

By the early 1970s the local authority had ceased repairing it.

The confession's false nature was so obvious that it became an embarrassment and the authorities ceased mentioning it.

In Somalia, the state and its sovereign authority and integrity ceased to exist as a result of these pressures.

We urge the Chinese authorities to cease action against those who have done no more than claim their legitimate rights to democracy and liberty.

At first, he was looked upon a serious case by illness, so authority ceased to try his case.

The authority of the vicar does not cease with the pope who appointed him.

Beyond thirty, and separated from my ship, my authority ceased.

This meant that the various local authorities that held city status ceased to exist on 1 April 1974.

A modern nation-state usually has clearly defined borders at which one government's authority ceases and that of another begins.