Police say 32-year-old Kevin Boston of Greenville has been in custody since shortly after the assault on Willie Dean. The 43-year-old Greenville resident was stabbed while he was working at Susie Trigg Elementary, where he was a custodian. Police say he was stabbed in the lower torso and died less than 45 minutes later at a local hospital. Officers say no students were ever in danger, but they did have to put the school on lockdown while investigating the incident. Willie Dean is the fifth homicide victim of the year in Greenville.