Nordic truce monitors, the International Committee of the Red Cross and international relief agencies sent representatives to supervise the operation after weeks of haggling over security guarantees for the convoy.
The aid was due to arrive Tuesday, but was held up by heavy artillery fire across a de facto front line in the region.
The government military and Tamil Tiger rebels blamed each other for initiating the exchanges.
The defence ministry said the Liberation Tigers of Tamil Eelam (LTTE) fired artillery and mortar bombs blocking the convoy of 115 vehicles on Tuesday.
buy avanafil online buy avanafil online no prescription
The Tigers said the military started the firing.
At least 65 people were killed when security forces shelled suspected LTTE gun positions in the area earlier this month.
The army later expressed regret at the civilian deaths.
The nor