LA CROSSE, Wis. (AP) — La Crosse police are investigating nine recent drug overdose deaths amid concerns that a powerful animal tranquilizer may be present in the local illicit opioid supply. The La Crosse Police Department, Gundersen Health System and Tri-State Ambulance warned the community Tuesday about the high number of fatal overdoses during 2023′s first three weeks. The deaths have raised concerns that the animal tranquilizer xylazine, known as “tranq,” may have entered local illicit supplies of fentanyl, heroin and cocaine. Toxicology reports on the recent overdose deaths are pending, and it may take weeks to determine whether or not “tranq” was present in some or all of the cases.