Here's what we know about the suspect in the deadly FSU mass shooting

A 20-year-old Florida State University student who authorities say opened fire on the school's Tallahassee campus Thursday, killing two people and wounding at least six others, was at the center of a custody battle between his birth parents, CBS News has learned.  

CBS News obtained court records showing a years-long custody battle between the birth parents of suspect Phoenix Ikner, who was shot by police and taken to a hospital following Thursday's mass shooting.

Authorities told reporters the weapon used in Thursday's shooting was a former service weapon belonging to the suspect's stepmother, a Leon County Sheriff's deputy, which she now owned as a personal handgun.