Michal Marcin Krowczynski was reported missing on Jan. 18 while on vacation in the United States from Poland after he missed his scheduled flight back home. According to a SDPD report, his friends and family have been unable to reach him and are concerned for his welfare. Krowczynski posted various photos of San Diego and La Jolla on his social media prior to his disappearance, and evidence believed to have belonged to him was recently recovered on the beach near Calumet Park. He is described as a white male, approximately 5-feet 9-inches tall, 180 pounds with brown hair and green eyes. Anyone with information that related to seeing Krowczynski in the area is urged to contact the San Diego Police Department at 619-531-2000 or the Missing Persons Unit at 619-531-2277.