CNN reported that two anonymous sources familiar with the governor's plans revealed Pence would be endorsing Cruz just a few days before Tuesday's primary. Politico also reported the news, citing an anonymous source.
Pence is scheduled to appear on Greg Garrison's radio show Friday at noon E.T., where he may announce the endorsement. Cruz encouraged supporters to listen to that show.
"I will say this: I have tremendous respect for Gov. Mike Pence," Cruz said, according to CNN. "He has been an incredible leader for the state of Indiana. He has really demonstrated that when you cut taxes when you reduce regulations, that jobs follow."
The endorsement would come as a slight to GOP frontunner Donald Trump, as the Indiana governor has also met with him.