tripoli libyan authorities attempt negotiate group cut water supply libyan capital second time two months press release jail ally official say tuesday group shut pip pump water tripoli coastal towns al-hasawna well system south capital say tawfiq shwehaidi manager great man make river eastern city benghazi today fifth day row water stop try negotiate say group loyal late former leader muammar gaddafi demand release mabrouk ehnaish militia leader detain last month tripoli special deterrence force sdf align libya u.n.-backed government ehnaish backers make various threats sabotage infrastructure include oil gas supply october block water supply capital two weeks great man make river pipeline system build gaddafi pump water coastal areas underneath country southern desert water cut come libyans struggle cope steep decline live standards conflict develop gaddafi 2011 overthrow economic crisis lead rapid inflation severe cash shortages recent days also long queue fuel cook gas tripoli though distributors deny shortages residents nervous disruption supply queue hour fill vehicles jerry can libya press group restore water supply capital