Two killers are being united in prison.

Erik and Lyle Menendez, the Beverly Hills brothers who were convicted of killing their parents in 1989, have been reunited in a Southern California prison.

Since February, Erik Menendez, 47, and Lyle Menendez, 50, have lived in separate housing units at the R.J. Donovan Correctional Facility near San Diego.

But this week, Erik was transferred into the same unit as his brother at the facility, which houses nearly 3,900 male inmates.

The brothers had asked two decades ago, after they were sentenced, to be sent to the same prison. Prison officials said then that they often balked at putting partners in crime together, and the Beverly Hills detective who investigated the slayings argued that the brothers might conspire to escape if they were together.

Leslie Abramson, Erik Menendez’s attorney, at the time called housing the brothers separately “exceedingly cruel and heartless.”