Qurat-Ul-Ain Sadazai, 38, a Canadian citizen of Pakistani origin, center, arrives by Kenyan military helicopter at Wilson airport in Nairobi, Kenya Monday, July 2, 2012. THE CANADIAN PRESS/AP, Khalil Senosi

NAIROBI, Kenya - A pro-government Somali militia group said Monday that it had rescued four aid workers who were kidnapped by gunmen from a refugee camp in Kenya last Friday.

At least one of aid workers is Canadian.

Abdinasir Serar, a representative with the Ras Kamboni militia in Somalia, said his group heard of the kidnapping at the Dadaab refugee camp and pursued the kidnappers. He said Ras Kamboni fighters caught up with the kidnappers Monday morning about 60 kilometres inside Somalia.

Ras Kamboni's leader, Ahmed Madobe, said his men killed one kidnappers but that the other three escaped. The rescue happened in the village of Alu Gulay.

The four rescued workers were reported to have been taken to the Somali town of Dhobley and were expected to be flown to Nairobi later on Monday.

Four gunmen attacked a two-vehicle convoy from the Norwegian Refugee Council on Friday, killing one Kenyan driver and wounding two other Kenyans. The gunmen took one of the two vehicles and four international workers.

Foreign Affairs in Ottawa confirmed that one of the kidnapped aid workers was Canadian but could not verify reports that a second Canadian, of Pakistani, origin was also abducted. The two other aid workers hailed from Norway and the Philippines.

The kidnapper later abandoned the vehicle they hijacked and began walking toward the Somali border.

Norwegian Refugee Council Secretary General Elisabeth Rasmusson was present during Friday's attack but was not harmed or taken.

A spokesman for the Norwegian Refugee Council, Rolf Vestvik, said Monday he could not comment on reports of the aid workers' release, but expected to issue a statement soon.

Rasmusson said Friday that the attack happened on a main road toward the city of Dadaab in "what is recognized as the safe part of the camp." She said four men with pistols carried out the attack against the two vehicles. The attackers only took one of the vehicles.

A Kenyan police commander said the aid group originally arranged to have armed security travel with it but that the group cancelled the security arrangements at the last minute.

After an attack on a Doctors Without Borders convoy last year in which two Spanish women were abducted, some aid groups began using security escorts in Dadaab, a series of sprawling camps connected by sandy roads.

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with files from The Canadian Press

News from © The Associated Press, 2012