The lawyer for the family of Freddie Gray, a black man who died of injuries sustained during an arrest in Baltimore, says he believes the police had no reason to stop the man in the first place.

Authorities say Gray was arrested April 12 after police "made eye contact" with him and another man and the two started running. Gray was placed in a transport van, and roughly 30 minutes later was rushed to the hospital in critical condition. Gray died Sunday of what Deputy Police Commissioner Jerry Rodriguez described as "a significant spinal injury."

Billy Murphy, the lawyer hired by Gray's family, says he believes officers had no probable cause to stop Gray.

Police Commissioner Anthony Batts says the reason for Gray's stop is "a question we have to dig into."