KABUL, March 8 (Xinhua) -- A third massive explosion was heard on Wednesday in a main military hospital in central Kabul, which came under a coordinated terrorist attack earlier on the day.
"Two killed and 12 injured were admitted in nearby Wazir Akbar Khan hospital following the attack so far," Ismahil Kawosi, spokesman of Public Health Ministry, told local media, adding further details about the casualties will be released later on the day.
The first blast occurred roughly at 9:05 a.m. (0435 GMT) in Wazir Akbar Khan locality, where several government agencies and embassies are located. It was followed by another explosion.
The third explosion came around 10:46 local time as military helicopters were hovering over the building.
At least five suicide bombers were involved in the attack, local media reported.
The nature of the third blast was a car bombing in the parking of the facility, according to the reports.
Afghan Crisis Respond Unit (CRU) forces were deployed and were in engagement with the attackers, a security source told Xinhua.
Security forces have cordoned off the area for precautionary measures.
"We are aware of the report of Kabul hospital attack and are monitoring the situation. We stand ready to assist Afghan security services," the NATO-led Resolute Support coalition forces twitted.
The 400-bed hospital, which is located in the diplomatic district near the U.S. embassy, is the main and largest military hospital in the country.
No group has claimed responsibility for the attack yet.