LOS FRESNOS, Texas (AP) _ A high school special education teacher was hospitalized and another suffered nausea and headaches after a drug was slipped in their soft drinks during a power outage.

Authorities suspect a student was responsible.

''I thought I was going to have a heart attack because my blood pressure went up 50 points by the time I got to the nurse's office,'' teacher Elizabeth Pechacek said Tuesday.

She and teacher Mary Boisen began suffering from the effects of a still- unknown drug during the outage at Los Fresnos High School on Nov. 2.

Pechacek felt like the classroom was spinning and heard students laughing at her. She was hospitalized for five hours.

''It took me two or three days to remember what my name was and what my address was,'' she said. ''I'm kind of in a fog.''

Authorities have offered $500 to $1,000 for further information, but haven't made any arrests.

Principal Rey Farias and Superintendent Martin Pena did not return telephone calls to The Associated Press on Tuesday.