KUALA LUMPUR, Malaysia (AP) — Ten days after a Malaysian jetliner disappeared, Thailand’s military said Tuesday it saw radar blips that might have been from the missing plane but didn’t report it “because we did not pay attention to it.”

Search crews from 26 countries, including Thailand, are looking for Malaysia Airlines Flight 370, which vanished early March 8 with 239 people aboard en route from Kuala Lumpur to Beijing. Frustration is growing among relatives of those on the plane at the lack of progress in the search.