Charged hadronic five-body decays of D+ and D-s(+) mesons have been st
udied in the E687 photoproduction experiment at Fermilab. We report th
e first compelling evidence of the decay mode D+,D-s(+)-->pi(-)pi(-)pi
(+)pi(+)pi(+) and the measurements of the decays D--->K(-)pi(-)pi(+)pi
(+)pi(+), D-s(+)-->K(-)K(+)pi(-)pi(+)pi(+) and D-s(+)-->phi pi(-)pi(+)
pi(+). An analysis of the D+-->K(-)pi(-)pi(+)pi(+)pi(+) resonance stru
cture is also presented. (C) 1997 Published by Elsevier Science B.V.