 The original investigations levelled accusations at Silverio Nungo ( who was later executed ) and Lazaro Kavandame , FRELIMO leader in Cabo Delgado . The latter had made no secret of his distrust of Mondlane , seeing him as too conservative a leader , and the Tanzanian police also accused him of working with PIDE ( Portugal 's secret police ) to assassinate Mondlane . Kavandame himself surrendered to the Portuguese in April of that year . 
 The original investigations <a href='uninflect' title='1'><mark>levelled</mark></a> accusations at Silverio Nungo ( <a href='null_relcl' title='2'><mark>who</mark></a>was later executed ) and Lazaro Kavandame , FRELIMO leader in Cabo Delgado . The latter <a href='been_done' title='3'><mark>had</mark></a> made no secret of his distrust of Mondlane , seeing him as too conservative a leader , and the Tanzanian police also accused him of working with PIDE ( Portugal <a href='null_genetive' title='4'><mark>'s</mark></a>secret police ) to assassinate Mondlane . Kavandame himself surrendered to the Portuguese in April of that year . 
The original investigations leveled accusations at Silverio Nungo ( was later executed ) and Lazaro Kavandame , FRELIMO leader in Cabo Delgado . da latter done made no secret of his distrust of Mondlane , seeing em as too conservative a leader , and the Tanzanian police also accused hemof working w PIDE ( Portugal  secret police ) to assassinate Mondlane . Kavandame hisself surrendered to tdaPortuguese in April of dat year .