Five South Koreans were kidnapped while driving in a Mexican border city, police and embassy officials said Tuesday, and their captors reportedly are demanding a US$30,000 ransom, AP reported. Gunmen seized the four men and one woman as they rode in a car on July 14 in Reynosa, across the border from McAllen, Texas, police commander Noe Hinojosa said. The South Korean Yonhap news agency reported the captors falsely identified themselves as police, a common practice among criminals in Mexico. Hinojosa said officials were investigating, but had no leads in the case. He said the kidnappers had demanded a US$30,000 ransom to free the group.