FACTS:

Melencios and Wicos co-owned a parcel of land. This was allegedly bought by Esteban from a certain Ramos, the alleged administratix of Melencio and Pura Melencio’s estate. Oblea was leasing then a building on the subject lot and eventually bought it from Esteban’s son. Esteban then filed an ejectment case to which he won. The registered owners then sold
the land to Oblea and they instituted an action for quieting of title against Esteban.

HELD:

An action for quieting of title before the RTC doesn't divest the MTC of its jurisdiction to hear the case for ejectment. Further, the subsequent acquisition of ownership of the property is not a supervening event that will bar the execution of the judgment in a case of unlawful detainer.