On October 19, 2023, the Federal Public Ministry of Brazil (MPF) announced its appeal to the Regional Federal Court of the 1st Region (TRF1) in Brasília regarding an action that challenges oil exploration in the Amazon estuary. The MPF is urging that the procedure for this lawsuit, originally initiated by civil society organizations in 2025 in Belém, remains in Pará, emphasizing the area's jurisdictional relevance for the case. The MPF also called for the immediate annulment or suspension of the environmental license issued by IBAMA to Petrobras, highlighting the case's environmental implications.

The original lawsuit aimed to assess the full impact of the oil exploration project on climate and socio-cultural aspects of local communities. However, the Federal Court in Pará had transferred the case to Amapá, citing a similar ongoing action. The MPF's current appeal counters this decision, arguing that the transfer violates legal codes and precedents, which could hinder the specific legal proceedings that should take place within Pará due to the direct implications for its environment and community.

This legal development reflects the ongoing tensions surrounding environmental protection, resource exploitation, and jurisdictional authority in Brazil. The case may have significant implications not only for the future of oil exploration in the Amazon but also for how environmental policies are enforced and the rights of local communities are protected in the context of large-scale industrial projects. The MPF's actions are crucial in determining the fate of these environmental disputes and the legal frameworks governing them.