Washington: Two police officers in the US state of Iowa were shot dead on Wednesday in an "ambush" as they sat in their cars, authorities said.
"It doesn't look like there was any interaction between these officers and whoever the coward is that shot them as they sat in their cars," Des Moines Police Sergeant Paul Parizek said in an early morning news conference.
"In all appearances it looks just like that, that these officers were ambushed."
