 arrived for classes shortly after emergency services were deployed to the scene. State Governor Kaleb Mutfeng has said the collapse is a wake-up call. Building collapses are becoming common in Nigeria. Nearly one million power adapters sold with sound machines marketed to help infants sleep are being recalled. They already say the plastic surrounding the AC power adapter that was supplied with some of Hatch's rest first-generation sound machines can come off, leaving the prongs exposed.