A sisterhood agreement between the Municipality of Sta. Cruz and the City of Mandaluyong was formally signed on February 19, 2018 by mayors Alexis C. Almendras of Sta. Cruz and Menchie Abalos of Mandaluyong. It was held at the lobby of the Mandaluyong City Hall and was witnessed by Sta. Cruz and Mandaluyong officials and office heads.