FORT DODGE, Iowa (AP) -- About 75 students at Fort Dodge St. Edmond Catholic elementary school have been sent home because of a suspected case of bedbugs.

The Messenger reported 75 students in three classrooms were sent home Tuesday morning after a teacher noticed what appeared to be insect bite marks on a child.

School spokeswoman, Mary Lynn Biggins, says sending the students home was a precautionary measure and that no bedbugs have been found in the classrooms.

There are about 400 students in the elementary school. Biggins says the rest of the school was operating as usual.

Biggins says a letter from public health officials will be sent to the parents of the students who were sent home and information will be posted on the school's website.