Ten Iranian border guards were killed in a terrorist attack in Sistan and Baluchestan province in southeast Iran on Saturday, the country's interior ministry and police said. 

In a statement published on its official news website, Iran's police command said the forces, comprising conscripts and policemen, were ambushed by "criminal terrorists" as they were returning to their station from a mission to provide security services to citizens in Taftan County.

The interior ministry added it has formed an investigation team into the attack.

(With input from agencies)