Davis was home on military leave back on October 17th when he was gunned down in University City.
Investigators say Davis and a 19-yr.old man were in the wrong place at the wrong time near 40th and Ludlow when men, who were arguing outside an arcade, starting shooting.
The other man was wounded, but doctors could not save Davis.
Police took Russell into custody last night, after receiving an anonymous tip that he was hiding out in a home at the 55-hundred block of Webster Street.
