Wichita ? Police in Wichita say three teenage girls who plotted to escape from a juvenile detention facility instead found themselves being evacuated wearing nothing but towels.

The Wichita Eagle reports the girls, ages 16 and 17, soaked a washcloth in a flammable liquid and set it on fire in a vent Monday night. Police Lt. Doug Nolte says they planned to slip out when the center was evacuated because of the fire alarm.

When the smoke detector didn’t immediately go off, they jumped into the shower to cover their absence.

That’s when the fire alarm went off. The staff evacuated the 55 girls housed at the facility, including the three in the shower. All were returned to the center after the washcloth was found.