From CBS 8 Des Moines:
A suspect in the ambush-style killings of two police officers was captured Wednesday morning, KCCI-TV reported.
Authorities said two police officers in the Des Moines area were shot to death in the attacks, which happened about two miles apart.
The Des Moines Police Department said in a news release that officers responded to a report of shots fired about 1:06 a.m. and found an Urbandale Police Department officer who had been shot.
Des Moines officers responded to help. About 20 minutes later, a Des Moines officer was found shot about two miles away. Both officers have died.