Lastovkin was last seen at his residence on Memorial Drive in Stoughton, Massachusetts between 6:00 and 7:00 a.m. on November 12, 2009. He walked away from his home without his cellular phone and with very little money, although he did have his wallet and possibly his green card. He has never been heard from again. Lastovkin left behind some notes which indicated he was suicidal.

Lastovkin's family stated he had suffered from a bout of severe depression earlier in 2009, but appeared to improve before his disappearance. His family describes him as a shy, modest individual. His hobbies include drawing, creative writing and musical composition. He had a job at the Family Dollar Store on Washington Street at the time of his disappearance, and had recently been given extra hours, which he was happy about. He was scheduled to work on the day he went missing, but never showed up.

Lastovkin had lived in Stoughton for about six years before his disappearance. Prior to that he lived in Canton, Massachusetts and attended elementary, middle and high school there. He has traveled to other states in the past, but he has never been out of touch with his family before. He may be hitchhiking or taking the bus as a means of transportation. Foul play is not suspected in Lastkovin's case, but due to his depression there is concern for his safety. His case remains unsolved.