A man is in custody and two children are safe after a barricade situation ended around 17 hours later in Alexandria Monday afternoon, Fairfax County police said. 
Police in Fairfax County were concerned for the the welfare of two children who were barricaded inside a Fort Hunt home with a mentally disturbed man. 
According to Officer Tawny Wright, spokeswoman for the Fairfax County Police Department, the incident began around 8:00 p.m. when a caller reported speaking to a man on the phone who was experiencing a mental health crisis.  
Police obtained an emergency custody order and went to the man's home, located near the intersection of Culpeper Rd and Londonderry Rd.  When officers tried to take him into custody, the man refused to come out of the home. 
Police said the children are four- and eight-years-old. 
Negotiators were at the scene for hours and were in touch with the subject.  A SWAT team was also standing by at the scene. 
We will continue to update you as we learn more.