New York, NY (BBN)- The United Nations has condemned suicide bombing in a south-eastern Afghan town that targeted a clearly marked UN convoy taking part in a polio eradication program.

Three members of the convoy were killed in the explosion, which occurred on Sunday morning in the town of Spin Boldak, which lies close to the Pakistani border in Kandahar province.

Several bystanders were also injured by the blast, according to a statement issued by a spokesperson for Secretary-General Ban Ki-moon. The attack took place a day after the Governor of Logar province was killed in another suicide bombing near Kabul.

“These unacceptable and cowardly actions show the brutal face of those opposing progress towards peace and reconstruction in Afghanistan,” Mr. Ban’s spokesperson said.

The three convoy members killed on the day were all Afghan nationals: a driver for the UN Assistance Mission in Afghanistan (UNAMA), and two doctors working under contract for the World Health Organization (WHO) as part of a polio vaccination campaign in the region.

BBN/SI/SI/AD-15September08-10:58 AM