SANAA, Yemen - Diplomats say the UN envoy to Yemen met with the country's ex-president to press him to stop meddling in the country's affairs.

The meeting Monday between UN envoy Jamal bin Omar and Ali Abdullah Saleh comes after his son appointed a relative to head a new security unit, defying orders from the current president.

In February, Saleh handed power to his deputy, Abed Rabbo Mansour Hadi, in an internationally backed agreement.

Since then, Saleh has been accused of obstructing Hadi's attempts to purge Saleh's loyalists from security agencies.

Two diplomats said bin Omar told Saleh he will raise the issue at the UN Security council, warning of sanctions against his loyalists.

Al Qaeda-linked militants have taken advantage of a year of turmoil to take over parts of southern Yemen.