SAC CITY - Police are continuing to investigate the discovery of human remains Monday in the basement of a Sac City home.
The people living at 610 N. Fifth St. in Sac City called police Monday after they discovered skeletal remains in their basement.
Sac City Police Chief John Thomsen said in a written statement that the house had just recently been purchased, and they were cleaning out the basement when they found the remains.
Sac County Attorney Ben Smith said he can't comment on the investigation since it's still ongoing.
"I'm not at liberty to discuss it for that reason," Smith said. "It's a sensitive issue, so I can't say anything about it now."
Smith also declined to comment on the possibility that the discovery is related to the disappearance of Mark Koster, who was reported missing to Sac City police on July 4, 2009.
"Everything's being done to ascertain as much information as we can regarding the circumstances," he said. "That's where we are at this point."
Koster disappeared more than three years ago, and was legally declared dead a little more than a year ago on Oct. 10, 2011, according to the Iowa Cold Cases website.
A phone call to Thomsen was not returned Wednesday.