At least six people have been killed in two separate attacks in southeastern Iran, state media reports.
Four people were killed in "a terrorist attack in Bent", reports the state news agency Irna, which also states that two police officers were shot to death in the city of Khash in the same province.
No one has initially claimed responsibility for the attacks.
The province of Sistan and Baluchistan is one of Iran's poorest. It borders Pakistan and Afghanistan and has long been plagued by unrest.
On Monday, it was reported that three police officers were killed in two attacks, one of which has been claimed by the extremist group Jaish al-Adl (Army of Justice).