Tight security ring thrown around six detained colonels

 achilles segumalian, afp, ariel querubin, armando banez, armed forces, army, bartolome bacarro, by anthony vargas, camp capinpin, coup, custodio parcon, detained, february, fort san felipe, general, januario caringal, manila, marine, military, officers, orlando de leon, president gloria macapagal, querubin, ring, sangley point, security, six, tight, vice admiral mateo mayuga