Rackete was arrested on June 29 for entering Italy’s Lampedusa port despite a veto imposed by far-right Interior Minister Matteo Salvini, and knocking a coast guard boat out of the way to land 40 migrants
The statement added that UAE reaffirms its commitment to the United Nations' Security Council resolutions 1970 and 1973 on sanctions and arms embargo.
UN chief Antonio Guterres denounced the "horrendous" attack and demanded an independent investigation, as a divided Security Council failed to condemn the strike.
The United Nations is calling for all migrant detention centers in Libya to be shut down following last week’s airstrike on one centre that killed more than 50 refugees and migrants.
Libya is one of the main departure points for African migrants, fleeing poverty and war, to try to reach Italy by boat, but many are picked up and brought back by the Libyan coast guard, supported by the European Union.
An air strike late on Tuesday hit a detention centre for mainly African migrants in a suburb of the Libyan capital of Tripoli, killing at least 40 people and wounding 80, a health official said.
The UN Security Council called on Friday for a ceasefire in Libya as the death toll from a three-month offensive on Tripoli reached 1,000, including scores killed in an air strike that hit a detention centre
The United Nations envoy for Libya on Monday warned countries tempted to continue backing eastern strongman Khalifa Haftar that he was no democrat and his political agenda was not supported by most Libyans.
In terms of international backing, Haftar enjoys the support of Egypt, Saudi Arabia, the United Arab Emirates, Russia and — now, clearly — the United States.
Diplomats have long complained that Libyan peace efforts have been stymied by major power backing for the rival sides and Haftar ally Russia has quibbled over the proposed wording of the ceasefire demand even as the bombardment of Tripoli intensifies.