PORT-AU-PRINCE, Haiti—Haiti’s fuel crisis is deepening, with the country’s Professional Association of Banks announcing Friday that a shortage of petroleum is forcing institutions to cut their hours and days as dozens of gas stations across the capital remained closed. Starting next week, banks will operate only three days a week instead of the usual six and will close in the early afternoon. Long lines, fights, and boisterous crowds formed earlier this week around a handful of gas stations that were still operating, with a gallon of gas costing roughly $15 in some places. Motorcycle drivers, business owners and even police officers have been forced to search for fuel, with many customers waiting hours for their turn. The shortage has hit hospitals, schools, ambulances, public transportation, and others in recent weeks as anger and frustration grows. The government has blamed gangs for blocking gas distribution terminals, with local newspaper Le Nouvelliste …