PORT-AU-PRINCE, Haiti >> The Federal Aviation Administration prohibited U.S. airlines from flying to Haiti for 30 days after gangs shot three planes and the United Nations also Tuesday temporarily suspended flights to Port-au-Prince, limiting humanitarian aid coming into the country.

Bullets hit a Spirit Airlines plane when it was about to land in the capital Monday, injuring a flight attendant and forcing the airport to shut down. Photos and videos obtained by The Associated Press show bullet holes dotting the interior of a plane.

On Tuesday, JetBlue and American Airlines announced that postflight inspections found their planes also had been shot Monday while departing Port-au-Prince. American suspended flights to the capital until Feb. 12.

The shootings were part of a wave of violence that erupted as the country plagued by gang violence swore in its new prime minister after a politically tumultuous process.

U.N. spokesman Stephane Dujarric said the agency documented 20 armed clashes and more roadblocks affecting humanitarian operation during the violence Monday. The Port-au-Prince airport will remain closed until Nov. 18, and Dujarric said the U.N. will divert flights to the country’s second airport in the northern, more peaceful, city of Cap Haïtien.

Slashed access to the epicenter of the violence, Port-au-Prince, is likely to be devastating as gangs choking the life out of the capital have pushed Haiti to the brink of famine. Dujarric warned that cutting off flights would mean “limiting the flow of humanitarian aid and humanitarian personnel into the country.”

Already, a convoy of 20 trucks filled with food and medical supplies in the south had been postponed and an operation providing cash assistance to a thousand people in the Carrefour area where violence broke out had to be canceled.

“We are doing all we can to ensure the continuation of operations amidst this challenging environment,” he said. “We call for an end to the escalating violence, to allow for safe, sustained and unimpeded humanitarian access.”

On Tuesday, life in much of Haiti’s capital was frozen after the wave of violence. Heavily armed police in armored cars outside the airport checked trucks used for public transportation passing by.

Schools were closed, as were banks and government offices. Streets, where just a day before gangs and police were locked in a fierce firefight, were eerily empty, with few driving by other than a motorcycle with a man who had been shot clinging to the back.

The sounds of heavy gunfire still echoed through the streets in the afternoon — a reminder that despite political maneuvering by Haiti’s elites and a strong push by the international community to restore peace, the country’s toxic slate of gangs kept its firm hold on much of the Caribbean nation.

The United Nations estimates that gangs control 85% of the capital, Port-au-Prince. A U.N.-backed mission led by Kenyan police to quell gang violence struggles with a lack of funding and personnel, prompting calls for a U.N. peacekeeping mission.