An investigation led by The Associated Press has found that the practice of giving sedatives to people detained by police has spread quietly across the nation over the last 15 years, built on questionable science and backed by police-aligned experts. The injections are given by medical personnel during police encounters. The investigation shows how a strategy intended to reduce violence and save lives has resulted in some avoidable deaths. While sedatives were mentioned as a cause or contributing factor in a dozen official death rulings, authorities often didn’t even investigate whether injections were appropriate in the 94 deaths identified by the AP over a decade. About half of the 94 who died were Black. Read moreTakeaways from AP's investigation into fatal police encounters involving injections of sedatives