DES MOINES, Iowa (AP) — Des Moines officials will continue to monitor complaints about a putrid smell wafting from an animal rendering plant near downtown that triggered calls to an odor hotline and forced patio diners at a restaurant to move indoors.

A city inspector traced the stench to Darling International, a business that processes food industry byproducts by heating them, The Des Moines Register (http://dmreg.co/NEVTq4 ) reported.