THERE is no need to tighten security over the disputed Pag-asa (Thitu) Island at the West Philippine Sea (South China Sea) since the Philippines has not monitored security threats from China, Defense Secretary Delfin Lorenzana said on Friday.

'When you say tighten security, you are expecting somebody will attack you. No one has been attacking us there,' Lorenzana told reporters in a press briefing in Camp Aguinaldo, Quezon City.