Two separate suicide car bombings in Afghanistan's southern province of Helmand, have killed at least five people including two assailants on Saturday morning, said provincial officials.
A police officer said a blast occurred around 9:05 am local time (0435 GMT) at provincial intelligence agency's office in the principal capital of Lashkar Gah city, leaving one security force member killed and 10 people, mostly civilians injured.
The massive explosion also damaged several nearby houses and shops, reports Xinhua news agency.
Earlier in the day, two soldiers were killed and one suffered injuries after a Taliban fighter detonated an explosive-laden hijacked military armoured vehicle near an army camp in Nad Ali district, west of Lashkar Gah, Interior Ministry spokesman Nasrat Rahimi told local Tolo News TV.
The Taliban militant group has claimed responsibility for the attacks in Helmand province which is notorious for growing poppy and militancy.
The attacks came one day after the country started construction of a major gas project in western Herat province to transfer natural gas from Turkmenistan to neighbouring Pakistan and India.