Boston Police have arrested a teen-ager, already considered a "career criminal," for a double shooting that sent a young boy and his teen cousin to the hospital.

Larelle Pratt, 19, is charged with assault with intent to murder, unlawful possession of a firearm, unlawful possession of ammunition, firearm within 500 feet of a dwelling, being an armed career criminal (level 1) and operating after revocation or suspension. Police have said the suspect was likely gunning for the teenager.

He's slated for arraignment tomorrow in Roxbury District Court.