Police said one of the victims of Sunday's attack had recently been involved in a car crash in which a child died, and that they believed that revenge could be the motive for the shooting.
Four people were arrested on Monday in connection with the shooting near the northern town of Bonao, police said.
Bonao police chief Bernardo Sanatana Paez pledged in a note to the Taiwanese Embassy that all of those responsible for spraying the home with bullets would be identified. Taiwanese nationals have been in the town for three decades helping to develop better strains of rice.
Two of the five injured Taiwanese youths were in serious condition, police said.

Copyright Reuters, 2006