Officials around 9 a.m. CT detained Scott Michael Greene, 46, in Dallas County, KCCI reported. He surrendered to a Department of Natural Resources officer in Redfield, according to The Des Moines Register. The city is about 35 miles west of Des Moines.
The newspaper reported that the arrest was peaceful.
Greene is accused of killing a pair of officers as they sat in their patrol cars just after 1 a.m. Wednesday. The victims were identified as 38-year-old Des Moines police Sgt. Anthony "Tony" Bemino, an 11-year veteran of the department, and Urbandale police Officer Justin Martin, 24, a recent police academy graduate.
The Des Moines Police Department said in a news release that officers responded to a report of gunfire at about 1:06 a.m. and found Martin shot and killed. At 1:26 a.m., a second shooting took place several blocks away, and Bemino was killed, police said. That officer was declared dead at Iowa Methodist Medical Center.
Des Moines Police Sgt. Paul Parizek said that officers are doubling up on patrols for safety. He added that there is "literally a clear and present danger," for metro police.
"It doesn't look like there was any interaction between these officers and whoever the coward is who shot them while they sat in their cars," Parizek said. "We're always vigilant about our safety, but we've still got to go out there."
For Des Moines, this is the first police officer shot and killed in the line of duty since two officers were gunned down in separate incidents in 1977, the Des Moines Register reported.
>> Related: 2 police officers ambushed, killed in Iowa: 5 things to know
Ben Hammes, Communications Director for Gov. Terry Branstad and Lt. Gov. Kim Reynolds, released a statement about the shooting, noting that "an attack on public safety officers is an attack on the public safety of all Iowans.
A page has been set up at Legacy.com for people to send condolences.