A "credible and serious security threat" was a primary reason that Duke University officials on Thursday abandoned plans to allow Muslim students to start broadcasting a weekly call to prayer from the Duke Chapel tower, a spokesman said.

The university announced plans Tuesday for members of the Duke Muslim Students Association to start the three-minute weekly call or chant, known as adhan or azan, on Friday afternoon.

The decision caused a national furor, with Franklin Graham, the son of evangelist Rev. Billy Graham and the head of the international relief organization Samaritan's Purse, posting on his Facebook page that followers of Islam are "butchering" people who don't share their beliefs and urging Duke alumni and supporters to withhold donations.

Read the complete original version of this item...