Iran's official IRNA news agency says authorities have banned Iran soccer coach Carlos Queiroz from leaving the country over unpaid taxes.

The former Real Madrid head coach was stopped Saturday as he and the Iranian team were leaving for Europe for friendlies against Chile and Sweden. The team had to travel without him.

The incident comes one day after Queiroz resigned from his post, citing "external pressures" despite signing a contract extension through 2018 six months ago. Queiroz's job is due to finish at the end of this month.

The semiofficial ISNA news agency says Queiroz's contract specifies that Iran's Football Federation must pay his taxes.

The travel ban may be rooted in politics: Iran's sports minister reportedly wants Queiroz out, while the football federation continues to support him.