PHILADELPHIA (CBS) -- Ain Philadelphia last month was arrested on Friday morning in Baltimore, police said.
Police said the suspect, Lance Ryan, stalked his victims inside Morris Market convenience store in South Philadelphia on November 7th. He covered his face with a mask and followed the mother and her son outside.
He beat both of them, kicking one victim in the head several times before stealing their belongings.
Two weeks ago, police released a video of Ryan and announced they were looking for him.
According to video obtained by WJZ, it shows Ryan following the mother and her son outside of the store before attacking the son, first, and then storming after the mother.
In the video, Ryan kicked her in the head and knocked her unconscious before stealing her belongings and leaving her on the sidewalk.
The suspect then returned to her son and stole his stuff too.
Then, on Friday morning, Philadelphia's deputy commissioner tweeted that the FBI Violent Crime Task Force arrested Ryan in Baltimore.
Police are being tight-lipped on how they found the man suspected in this violent attack and why he ended up hiding out in Baltimore.
Local police do have partnerships with federal law enforcement to help solve violent crimes.
We got rare access inside the Baltimore warehouse where agencies coordinate their responses and share intelligence last July as part of CBS News'.
"The law enforcement community is so balkanized. You've got local, state, and federal. Here is where we can put all or most of them together in one place, sharing information, working together," Maryland's U.S. Attorney Erek Barron said.
As for Ryan's arrest, the FBI has not returned calls for comment. Baltimore police told WJZ they had no information to share.
Ryan is expected to be extradited back to Philadelphia to face felony charges.
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