He was a key figure in the successful peace negotiations between the Angolan government and the National Union for the Total Independence of Angola (UNITA), including that of Alto Cauango in 1991, which allowed for the gradual pacification of the country.[4]
In February 2019, Carneiro was indicted for financial crimes committed during his tenure as governor of Luanda. These include allegations of corruption, money laundering and breach of trust.[7] Along with another lawmaker, Manuel Rabelais, he is the first former member of government to be prosecuted since Joao Lourenco became Angola’s president in 2017.[8] The General Attorney's Office on 13 February 2020 prohibited Carneiro from leaving the country as long as investigations are ongoing.[9]
Carneiro is also accused of having run a money-laundering scheme through a front company called Agro 88, owned by Swiss art dealer Yves Bouvier.[10] It was reported by local media that Agro 88 was "a front company designed to suck Angola's money".[11]