Taliban militants ambushed a group of Afghan police while they were eating lunch in a remote and dangerous part of southern Afghanistan, killing 20 officers and one of the policeman's mother, an Afghan official said Thursday. A Taliban spokesman, Qari Yousef Ahmadi, said two Taliban were killed and four wounded during the ambush. Ahmadi claimed 32 police were killed, but that number had not been confirmed by Afghan officials. The attack came Wednesday in the small village of Shaghzay in the district of Kajaki in Helmand province, said Daud Ahmadi, spokesman for Helmand's governor. He said 20 police bodyguards for the district chief of nearby Musa Qala were killed. Musa Qala for many months of 2007 had been held by Taliban fighters. The mother of one of the police pleaded with the militants to spare her son's life, and she was also killed, Ahmadi said.