April 14, 2015 5:50 pm Note Threatening Shooting Found at MAST Academy arents and students at a Key Biscayne school are feeling anxious Tuesday after a disturbing and threatening note was found at the school late Monday night. US & World Videos 0:18 National Supermarket catches fire in Hialeah 0:34 Sean Kingston booked into Broward County jail on $1 million fraud charges 0:17 Mexico elects Claudia Sheinbaum as its first female president 1:36 6 to Know – Top stories of the day 1:46 Workers raised flags about Miami-Dade home where apparent murder-suicide took place, neighbor says
