Here is the latest Iowa news from The Associated Press at 3:40 a.m. CST

DELHI, Iowa (AP) — A group of University of Iowa students presented possible solutions to a wastewater treatment issue at a lake in eastern Iowa. The Telegraph Herald reports that engineering students with the university’s Iowa Initiative for Sustainable Communities offered design options to Delaware County officials. The findings aim to help Delhi home septic systems meet state code.

DES MOINES, Iowa (AP) — A Des Moines shelter is bending some of its rules to ensure that homeless people have a place to stay during the dangerous chill that’s descended over much of the Midwest. Central Iowa Shelters & Services is letting people stay longer as the temperature remains zero (minus 18 Celsius) or below. The shelter also is converting its computer lab into living space.

DUBUQUE, Iowa (AP) — A Chicago man accused of shooting into a Dubuque nightclub has pleaded not guilty. The Dubuque Telegraph Herald reports that 32-year-old Richard Sanchez filed a written plea to charges of theft, going armed with intent and of intimidation with a dangerous weapon.

SIOUX CITY, Iowa (AP) — A former Sioux City schoolteacher has been accused of stealing nearly $3,000 from accounts she set up for East High Special Olympics and the Friendship Connection. The Sioux City Journal reports that 48-year-old Melissa Dickerson is charged with theft. Her attorney didn’t immediately return a call Monday from The Associated Press.