Liberation Tigers of Tamil Eelam chief V Prabhakaran sustained injuries during an air raid by Sri Lankan air force jets on November 28, a media report said on Sunday.

'Although the nature of the injuries is minor, he had been treated in an underground facility in a secret location in the Wanni by the LTTE's Thileepan Medical Unit, the official emergency care unit of the LTTE,' the Nation newspaper reported quoting sources.

Prabhakaran was wounded in an underground bunker in the northern district of Kilinochchi, the report said, adding that the government appears to be unaware of the incident.

'A section of the bunker had crumbled and some falling debris had struck the LTTE leader,' the newspaper said.

Earlier last month, the Tamil rebels' political head S P Thamilselvan was killed in an air force raid.

'The November 28 attack by the Air Force near Jeyanthy Nagar in Kilinochchi hit the underground bunker in which Prabhakaran was staying between 12 noon and 1 pm,' the report said.

The LTTE is keeping the incident under wraps because of the demoralising effect it may have on cadres and supporters, the report said. There were no immediate reactions to the story either from the LTTE or the military.