The Prince George’s County youth detention facility where a teacher was killed last year remains plagued by assaults, security lapses, crowding and understaffing, according to a new report. Maryland’s Juvenile Justice Monitoring Unit, a watchdog for the state’s youth detention centers, says assaults and disturbances at the Cheltenham Youth Facility spiked in July, August and September compared with those months last year.

Reports from the agency have slammed Cheltenham since February 2010, when instructor Hannah Wheeling was killed. A student who was 13 at the time has been charged in her death. This summer, two detainees briefly escaped, partly as a result of shoddy supervision, according to the monitoring agency.