Arroyo outlines reasons for martial law declaration in 20-page letter . Report : Arroyo , Senate might jointly convene Monday , House Speaker says . at least one members of Muslim family arrested , ABS-CBN reports . Ampatuan , whose father is governor of Maguindanao , has been accused of directing the killings and has been charged with 25 counts of murder . Authorities raid At least six warehouse and ranch belonging to family .
Arroyo outlines reasons for martial law declaration in 20-page letter . Report : Arroyo , Senate might jointly convene Monday , House Speaker says . at least one members of Muslim family arrested , ABS-CBN reports . Authorities raid At least six warehouse and ranch belonging to family .