We first told you about this case last month.
Portsmouth police needed our help to find an accused arsonist who was said to be hiding out in Hampton Roads.
Maryland State Police have arrested Derrick Williams.
Portsmouth police say he may have fled the area when we aired his story.
He was picked up within a week of our broadcast.
Investigators say the case started with a domestic assault in a community called Bryans Road in Charles County, Maryland.
Then, Williams is accused of burning down the house he shared with his victim.
Maryland state police say he fled to Portsmouth.