An arrest has been made in connection to a murder case that ended up putting a hospital on lockdown. Madisonville police tell us 19 year old Lawrence Leal was arrested in Houston, Texas. Leal has been charged in the May 10th shooting of Jamarkus Jackson. Jackson was killed in Madisonville, but concern about retaliation over the incident spread to Evansville. That concern put St. Mary's medical center on lockdown. Two other people are awaiting trial in connection with the shooting.