Donald Trump announced Friday that Indiana Gov. Mike Pence is his choice for his vice presidential running mate.

That followed an exclusive report by Roll Call on Thursday that Trump was planning to announce that Indiana Gov. Mike Pence would be his choice for his vice presidential running mate, according to a Republican with direct knowledge of the decision.

Roll Call reported Thursday that as Trump narrowed in on his choice of Pence, the two men spent time at both Trump’s golf resort in New Jersey in early July and later at the Indiana governor’s mansion.

In addition to testing the men’s chemistry together, Trump was reportedly impressed with Pence’s calm demeanor, his experience on Capitol Hill and as a governor, and Pence’s potential to assist Trump in governing, should the ticket win in November.

Trump released the news on Twitter after a Friday morning event was postponed after the the terror attack that killed more than 80 people in Nice, France.