 The original investigations levelled accusations at <unk> <unk> ( who was later executed ) and <unk> <unk> , FRELIMO leader in Cabo <unk> . The latter had made no secret of his distrust of Mondlane , seeing him as too conservative a leader , and the <unk> police also accused him of working with PIDE ( Portugal 's secret police ) to assassinate Mondlane . <unk> himself surrendered to the Portuguese in April of that year . 
