No one immediately claimed responsibility for Thursday 's incidents , which brought to 23 the number of guerrilla attacks on the resort island since mid-August , when separatist guerrillas ended a shaky seven-month truce .
<response> No one immediately claimed responsibility for Thursday 's incidents , which brought to 23 the number of guerrilla attacks on the resort island since mid-August , when separatist guerrillas ended a shaky seven-month truce . </response>