Afghan police have arrested a suspect in a bombing that killed five people and injured more than 30 in the southern city of Kandahar, a senior officer said Friday. Provincial police chief Khan Mohammed said the suspect was nabbed in the city after Thursday's roadside explosion, which hit a taxi carrying women and children and sent shrapnel flying into other civilian bystanders. Khan refused to give any details about the arrested man, saying a police investigation was continuing.The bomb went off as Secretary of State Condoleezza Rice visited the Afghan capital, Kabul, about 280 miles to the north, for talks with Afghan President Hamid Karzai. It was her first trip to the country. On Thursday, Khan blamed the attack on rebels from renegade warlord Gulbuddin Hekmatyar's Hezb-e-Islami group, and the former ruling Taliban. A purported Taliban spokesman, however, denied the hardline militia's involvement.