On Sunday, the bomb explosion hit a main market street in Pakistan’s town of Chaman, opposite the town of Spin Boldak in Afghanistan's Kandahar Province, said local police station chief, Agha Mohammad.
"An eight-year old boy was killed and six others were wounded when a bomb planted on a motorcycle exploded in Taj Bazaar,” Mohammad said.
Provincial home secretary, Akbar Hussain Durrani, confirmed the bombing and casualties.
No group has claimed responsibility for the attack, but such incidents are mostly blamed on pro-Taliban militants.
Pakistan's Balochistan and Afghanistan's Kandahar provinces have witnessed bomb and suicide attacks in the past.
The semi-autonomous tribal regions on Pakistan’s border with Afghanistan have been a hideout for Takfiri militant groups, including al-Qaeda and the Pakistani Taliban, during the past years.
Thousands of Pakistanis and Afghans have lost their lives in bombings and other militant attacks since 2001, when the United States started its so-called war against terrorism in the respective nations.