Under the contract, 24 interrupters and outreach workers were hired in two communities hit especially hard by violence: Woodlawn on the South Side and North Lawndale on the West Side. The contract is administered by the city's Department of Public Health, a nod to the group's philosophical underpinning that violence is a public health epidemic. A spokesman said the department was aware of the arrest and was awaiting further details to determine what effect, if any, it has on the city contract.