"I strongly deplore these terrible killings and call on those with authority on the ground in Bani Walid to ensure that the incidents are investigated and to prevent any further killings," Martin Kobler said in a statement yesterday.
He said the incidents took place on Tuesday and yesterday but gave no details and there was no further information from sources in the region, which is controlled by militias loyal to a new unity government.
The United Nations has brokered the formation of the unity government for Libya, which has been roiled by turmoil since the 2011 ouster and killing of longtime leader Moamer Kadhafi.