Abbott warns Iranian ‘sleeper cells’ must be taken ‘seriously’ after deadly Texas shooting

Texas Gov. Greg Abbott warned that Iranian "sleeper cells" operating inside the United States pose a serious threat following Operation Epic Fury, saying the danger must be taken "seriously" as the Lone Star State ramps up security efforts.

"You oftentimes see when there's a war breaking out like this, where the United States may be going against a country like Iran, that you could have either sleeper [cells] or lone wolves acting," Abbott told "Mornings with Maria" on Monday.

"That's...