On Monday afternoon, May 20th at approximately 4:30PM, police investigated a report that Jon T. Lockwood, 54, with a last known address at a Foxboro hotel, allegedly entered the foster home of his two children and forcibly removed his son, Patrick, from the house and ordered his daughter, Sarah into his car before driving off with both children. The foster mother tried fighting off Lockwood, engaging in a tug of war with him for custody of Patrick, but was unsuccessful. Patrick is an eight-year-old Asian male named My Tri “Patrick” Nguyen. He was last seen wearing blue jean shorts and a neon yellow T-shirt. Sarah is a ten-year-old Asian female named Tien Nhu My “Sarah” Nguyen. She was last seen wearing blue jean shorts and a blue and purple T-shirt with a mermaid on the front. No photo of Lockwood is available at this time. Lockwood drove off in a brown, 2005 BMW 525i, Massachusetts registration 478RF8. Several neighbors heard the commotion and came outside to investigate and one neighbor tried unsuccessfully to chase Lockwood down the street. Lockwood has since checked out of the Foxboro hotel and his whereabouts is unknown. The Braintree Police are working with the State Police to put out an Amber Alert for the two children.