WASHINGTON (AP) – A pivotal committee of delegates at the Republican National Convention has abruptly taken a recess of several hours, just as it was beginning to consider rules changes proposed by conservatives and foes of presumptive presidential nominee Donald Trump.

Some delegates said the Trump campaign and top GOP officials were trying to see if they could strike a compromise with conservatives trying to let delegates back any candidate they want and offering other rules changes.

A leader of those conservatives is Ken Cuccinelli, who was a campaign adviser to Texas Sen. Ted Cruz’s now abandoned presidential campaign. GOP Chairman Reince Priebus and top Trump campaign officials were also in the convention center.