Amber Alert Issued for Tyler Boy, Dad Suspected of Killing Ex-Wife, Taking SonAmber Alert Issued for Tyler Boy, Dad Suspected of Killing Ex-Wife, Taking SonAn Amber Alert has been activated for 4-year-old Lucas Calvert of Tyler, who police say was taken from his home near Pollard Park in Tyler by his father, James Calvert.Danny MerrellDanny Merrell