Published: Aug 25, 2011 3:43 PM EDT

COLUMBUS, Ohio (AP) - A university in Ohio has found more bedbugs in its newest residence hall and has moved a few students, including one who's staying in a hotel.
Ohio Dominican University in Columbus earlier this week treated five suites infested with the pests at Lynam Hall. The Columbus Dispatch reports Thursday that dogs that sniff for bedbugs later detected them in a dozen additional rooms.
A company is working to kill the insects by heating the rooms to more than 120 degrees.
The university temporarily put up four students in a hotel. Three have since returned to campus, where other students affected by the bedbugs have been moved to other housing.
Ohio Dominican officials say they're not sure how or when the bedbugs got into the dorm.

(Copyright 2011 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)