The Malaysian Anti-Corruption Commission (MACC) announced it found no evidence of corruption in investigations related to the conversion of flood retention pond land in Kuala Lumpur, including the Taman Wahyu area [1, 2, 3, 4]. The probe covered alleged irregularities and abuse of power involving land conversions and development approvals from 2015 to 2021 [1, 3, 4].

Investigation papers were opened by MACC in 2022 after complaints involving officers from Kuala Lumpur City Hall (DBKL) and the Kuala Lumpur Department of Irrigation and Drainage were received [1, 3, 4]. The complaints concerned actions between 2015 and 2021 surrounding flood retention ponds [1, 3, 4].

After detailed examination of documents and witness interviews, MACC referred the case to the Deputy Public Prosecutor (DPP) in 2023. The DPP decided on no further action (NFA), concluding there was no corrupt conduct [1, 2, 3, 4]. Datuk Mohd Hafaz Nazar, MACC’s senior investigations director, said, "However, based on the outcome of the investigation, no elements of corruption were identified and the case was classified as requiring no further action" [4].

MACC reminded DBKL in 2023 to strengthen monitoring, regulation, and governance of development projects near flood retention ponds to ensure contractors comply with all conditions and specifications. "This is because the aspects of monitoring, regulation and development approvals fall under the jurisdiction of DBKL to ensure all set conditions and specifications are fully complied with by contractors," Hafaz said [1]. Any violation affecting the ponds’ flood control function is under DBKL’s authority for further enforcement [1, 3, 4].

Hannah Yeoh, Minister in the Prime Minister's Department (Federal Territories), said DBKL has started building new on-site retention ponds at key locations such as the Botanical Gardens and Padang Merbok in May 2026 to help reduce flash flood risk [5, 6]. She added, "Every year we have floods when it rains heavily. Therefore, we have made a decision moving forward. We have said that lands that have been given ownership, will not arbitrarily get planning permission. We have to make sure that if we want to develop anything, we have to meet the technical requirements" [6].

Yeoh had lodged a complaint with MACC in 2021 regarding alleged irregularities involving flood retention pond land conversion [3, 4]. Former Federal Territories Minister Tengku Adnan Tengku Mansoor denied knowledge of any such land transfers during his term [3, 4].

DBKL's ongoing construction of new retention ponds aims to address recurring flood incidents in Kuala Lumpur while tighter land development permissions target improved flood risk management [5, 6].