The victims were burnt beyond recognition.
The burial, sponsored by Anambra State government, drew sympathizers from across the state, including government functionaries who were present to witness the ceremony.
The bodies were laid in caskets with a 21-gun salute to commence the solemn occasion.
Addressing the gathering, the state Governor, Willie Obiano, who was the chief mourner, recounted the gory tale of the petrol tanker accident of May 31 which claimed over 50 lives, expressing deep sadness over the incident.
The Governor said that the burial of the unclaimed bodies came to be as, in spite of series of announcement, nobody came to claim them.
He called for caution on the part of heavy duty truck drivers and reiterated the ban on fuel tankers delivering products during day time.
The bodies were taken to Obosi cemetery where a mass grave was prepared for the 32 bodies.
The governor bade them a final farewell with the dust to dust rites and erected a cenotaph as a memorial for the victims