At least 20 people were killed in a suicide bomb attack that targeted the personnel of the Islamic Revolution Guards Corps (IRGC) in Iran's southeastern Sistan and Baluchestan province on Wednesday, official IRNA news agency reported.

"A suicide bomb attack exploded the bus carrying the IRGC personnel in Chanali area on Khash-Zahedan road" in Sistan and Baluchestan province, an informed source told IRNA.

In the terrorist attack, at least 20 were killed and 20 others were injured, the unnamed source was quoted as saying.