BALTIMORE (AP) — Baltimore police say a “very violent” attempted murder suspect died of a self-inflicted gunshot wound while in police custody.

Police say the 38-year-old man was in a holding cell in the Southwestern District station house on Tuesday when he was escorted to the restroom, where he shot himself inside the stall. The gun was not police-issued, nor was it registered in Maryland.

Police say the man was affiliated with a gang, and had been shot days before his death. A search warrant was executed at a home connected to the man earlier Tuesday. Police confiscated a handgun.

Police spokesman Lt. John Kowalczyk said the department is investigating whether the man was searched before to being taken into custody.

The man’s name is being withheld until relatives can be notified.

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