Officer-involved shootings among Los Angeles County Sheriff’s deputies have decreased so far this year compared to the same time last year, but inmate deaths within the jails appear to be rising, according to a quarterly report heard by the Board of Supervisors Tuesday.

In the first three months of the year, the county’s Office of Inspector General responded to six investigations of deputy-involved shootings, which resulted in five injuries and two deaths. Three of the people shot were black, including one man who died, and three were Latinos. The other man who died was white. There were 11 deputy involved shootings in the first three months of this year, compared to 23 shootings for the same time last year.

But of most concern to supervisors were ten in-custody deaths, with many of the men and women dying on their way to the hospital. One was a suicide.

Five of the inmates who died were housed at Twin Towers Correctional Facility, two at Men’s Central Jail, one at North County Correctional Facility and one at Century Regional Detention Facility, according to the office of inspector general’s report.

The report did not list the medical reasons for the nine deaths other than natural causes, but all are under review, said LASD Chief Stephen Johnson.

“All these deaths are tragic,” Johnson said. “One suicide is one too many, but there are fewer suicides now than in past years.”

Meanwhile, use of force by deputies on inmates has steadily increased since 2012, when there were 473 incidents. That figure rose to 1,833 in 2016. So far this year, there have been 327 use-of-force incidents with inmates. Also increasing were assaults on deputies as well as inmate-on-inmate violence. From 2012 to 2016, inmate-on-inmate assaults more than doubled, from 1,682 incidents to 3,716.

Los Angeles County Assistant Sheriff Kelly Harrington told the board that the increase of assaults among inmates was partly due to AB109, the California bill that went into effect in 2012. The law realigned the state’s overcrowded prison system, shifting responsibility over repeat, nonviolent offenders from state prisons to county jails. Harrington said there were more violent inmates held in the jails as a result.

Supervisor Mark Ridley-Thomas called the report more provocative than conclusive and said he would introduce a motion next week that would ask the Sheriff’s Department to measure progress in training, particularly in issues related to implicit bias and cultural competency.

“This is a real piece of accountability,” he said, of establishing metrics to see if the training is working.

“The county departments had mandatory trainings on these topics, but no way to assess effectiveness of this training,” he said. “If we really want to make the department better, we have to confront these issues.”

The Office of Inspector General was created by an ordinance in 2014 to provide oversight of the Los Angeles County Sheriff’s Department and “to ensure transparent, accountable and constitutional policing for the County of Los Angeles.”

Last year, a long-awaited civilian oversight commission to push reforms within the Los Angeles County Sheriff’s Department was approved by the Board of Supervisors.