Togolese lawmakers on Wednesday mulled stripping a top opposition leader of immunity after prosecutors said they were investigating him for disputing the re-election of President Faure Gnassingbe. The incumbent won more than 70 percent of the vote in the February 22 presidential election to claim his fourth term and extend his family's five-decade rule over the West African country. But second-placed challenger Agbeyome Kodjo insisted he was the true winner after alleging widespread fraud to fix the results in Gnassingbe's favour. Kodjo was summoned to appear before a special parliamentary commission on Wednesday to consider stripping him of the immunity from prosecution granted to him as an MP of the national assembly. Prosecutors demanded the move in a letter to the head of parliament that accused Kodjo of threatening public order, spreading false news and undermining state security by proclaiming himself the rightful president in the wake of the vote. Kodjo told journalists he was prevented from attending the hearing after his house was surrounded by security forces in the captial Lome. He was instead represented by another lawmaker from his party. The entire parliament would have to vote to approve any decision to strip Kodjo of his immunity. Gnassingbe, 53, has led the country of eight million people since taking over in 2005 following the death of his father Gnassingbe Eyadema, who ruled with an iron fist for 38 years. Kodjo launched an appeal against last month's election result but it was rejected when the constitutional court confirmed , 53, has led the country of eight as the winner earlier this month. ek/spb/del/dl