Earlier in the day, the local news agency IRNA reported citing its source that 20 people were killed.
The deadly attack took place in the Chanali area of the Khash-Zahedan road, between the cities of Zahedan and Khash — an area not far from the border with Pakistan, where drug smuggling and military activities are quite frequent.
READ MORE: Two Blasts Reported Near Police Station in Iran (VIDEO)
According to the IRNA's source, the death toll currently stands at 20, while some 20 more have been injured as a result of the attack.
این نخستین تصاویر بعد از انفجار اتوبوس حامل سربازان در مسیر خاش_زاهدان است که گفته می شود ده ها شهید بر جای گذاشته است
— Saeedehh Khashi (@SaeedehhK) 13 февраля 2019 г.
گمانه زنی های فراوانی در حال انتشار است و از صمیم قلب دعا می کنم روزی خط بطلانی کلان کشیده شود بر هر چه خون و خونریزی….. pic.twitter.com/lmTUKBelTc
At present, no terrorist group has taken responsibility for the attack.
🔴اولین عکس از حمله انتحاری به اتوبوس #سپاه منتشر شد.
— Mahdi Bakhtiari (@Mahdiibakhtiari) 13 февраля 2019 г.
به نظر میرسد فرد انتحاری با کمربند انفجاری وارد اتوبوس شده است. pic.twitter.com/ENK3B1Oxoz
This comes after the most recent Iran attack which took place in September during a military parade, leaving more than 20 killed and over 50 injured.