Overview
- The suspected killings occurred on the night of December 23 on São Vicente, according to Portuguese police.
- The 19-year-old is accused of fatally stabbing his father, the father's wife, and her daughter.
- He left Cape Verde the same day and was arrested on Christmas Day at a hotel in Lisbon.
- Portuguese police said the arrest followed rapid issuance of a European Arrest Warrant after German authorities were notified.
- The suspect will be brought before a magistrate to determine possible pre-trial detention as the motive and full circumstances remain unclear.