Donald Trump has offered Mike Pence the vice presidential spot on his Republican ticket, and Trump aides have told the Indiana governor the formal announcement event could be made on Saturday.

“I am pleased to announce that I have chosen Governor Mike Pence as my vice presidential running mate,” Trump posted on Twitter, adding that he would host a news conference on Saturday at 11:00am (15:00 GMT).

The Republican presidential candidate had planned to announce his pick of running mate at a news conference on Friday morning, but postponed his announcement in the wake of the deadly attack in Nice, France.

Some US media had reported on Thursday that Pence would be chosen, but the Trump campaign had said no choice had been made, prompting speculation that the candidate had changed his mind.