Singapore  - A former taxi driver who supposedly torched a Singapore legislator at a community club event in January has been found to be of unsound mind and unfit to plead, media reports said Friday.

Ong Kah Chua, 70, has been remanded in a mental hospital pending a minister's order, after being diagnosed to be suffering from delusional disorder, the online edition of Straits Times newspaper reported.

The ex-cabby is accused of grievously harming Singapore Member of Parliament Seng Han Thong, 59, by pouring paint thinner over him and setting it alight during a community club event on January 11.

The legislator suffered burns to 10 to 15 per cent of his body. He was discharged from hospital after several weeks.

Ong is also charged of setting temple chairman Aw Chui Seng, 69, on fire, who suffered burns when he tried to beat out the flames during the incident.

Ong's case will be reviewed every six months by a medical experts, the report said. (dpa)