Thailand has admitted that Malaysia was not to blame for failing to catch insurgents behind attacks in the kingdom's restive south and admitted its own "vague" reports were at fault, according to a report today.

Thai Prime Minister Thaksin Shinawatra has accused Malaysia of not cooperating over the arrests of leaders blamed for separatist violence that has left more than 250 people dead in Thailand this year.

But Defence Minister Chettha Thanajaro admitted that poor information supplied by the Thai authorities was responsible for the lack of action, according to a newspaper report.

"I was under the impression that Malaysia had made no attempt to arrest the militants as we had requested," he was quoted as saying in the Bangkok Post .

"But after sending a team of people there, I've learned that the information we sent them about the supects was vague and insufficient."

The security team found that information and photographs of 22 suspected militants sent by Thaksin to his counterpart Abdullah Badawi was incomplete and out of date, the report said.

More info to be given

Bhokin Bhalakula, the Thai Interior Minister, told reporters Monday he would meet his Malaysian counterpart in the southwestern province of Phuket early next month to pass over more names.

"Thailand has already handed over 30 names to Malaysian authority but they said that the information was not updated enough and not sufficient so I will meet with them and hand them the new information," he said.

Northern Malaysia has a porous border with southern Thailand. It can be easily crossed without passing through checkpoints.

Thailand's south has been plagued by separatist violence until the 1980s when the government managed to curb militant activity, but in the last few years violence has flared again.

In April, Thai police and military killed 108 suspected Muslim rebels who launched attacks in three provinces in the bloodiest day of violence in recent Thai history.

Following the incident Malaysia and Thailand pledged closer cooperation to curb further attacks in the southern Thai provinces.