COLUMBIA, Md. — The families of two murder victims are suing a GPS monitoring company who was responsible for keeping their alleged killer off the streets.

Back in February Michael Robertson, 16, and Blake McCray, 15, were gunned down outside the Mall in Columbia.

Emmetson Zeah, 18, was arrested days later, and reportedly confessed to the shootings without providing a motive.

Howard County Police, however, do believe both teen victims were targeted.

It wasn't Zeah's first run-in with law enforcement.

At the time of the killings, Zeah was on a court ordered GPS monitor operated by the company Advantage Sentencing Alternative Program, which local courts use to track those on home detention who've either been convicted of a crime or are awaiting trial.

In Zeah's case, he'd already been

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