Presumptive Republican presidential candidate Donald Trump is likely to pick Indiana Governor Mike Pence as his running mate, media reports here said.
There was no word from the Trump campaign yet.
In a tweet, a day earlier, Trump said he would announce his running mate in New York on July 15.
The New York Times was the first to report about it.
"Donald J Trump's campaign has signalled to Republicans that he will pick Gov Mike Pence of Indiana as his running mate. It is seen as a cautious choice," the daily said.
At the same time it cautioned that Trump, known for his unpredictability, may still backtrack.
Fox News said Pence, who has spent quite substantial amount of time in the last few days with Trump including campaigning together, is abandoning his re-election bid as Indiana Governor.
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He was elected as the Indiana Governor in 2013.
Before this he was a member of the US House of Representatives for 13 years from 2003 to 2013.