HAIFA, Israel -- A wildfire roared through parts of Israel's third-largest city Thursday, forcing tens of thousands of people to evacuate their homes as the country's leaders raised the possibility that Arab assailants had intentionally set the blaze.
Spreading quickly in the dry, windy conditions, the fire raced through Haifa's northern neighborhoods, sending panicked residents fleeing.
While there were no serious injuries, several dozen people were hospitalized for smoke inhalation. In a rare move, Israel called up hundreds of military reservists to join overstretched police and firefighters and was making use of an international fleet of firefighting aircraft sent by several countries, including Russia and Turkey.
Israeli Prime Minister Benjamin Netanyahu spoke Thursday morning with Russian President Vladimir Putin, who agreed to send two firefighting planes that could drop water on the blazes. Media outlets reported that a supertanker firefighting plane would arrive from the United States in 24 hours.
The Haifa blaze was the most serious in a series of fires that ignited across the country in recent days. On a visit to the area, Netanyahu said anyone implicated in setting the fires would be punished severely.
"It's a crime for all intents and purposes and in our opinion it is terror for all intents and purposes," he said.
Netanyahu did not elaborate on the identity or motives of the suspected arsonists, but Israeli officials typically use the term "terror" to refer to Arab or Palestinian militant activity.
Israel has been on edge during more than a year of Palestinian attacks, mostly stabbings, that have tapered off in recent months but not halted. Netanyahu has blamed Palestinian incitement for fueling those attacks.
Netanyahu's accusations could test already brittle relations between Israel's Jewish majority and its Arab minority, which has long suffered discrimination in Israel and says it has been slighted by rhetoric from Netanyahu and other Israeli officials in the past.
Public Security Minister Gilad Erdan told Channel 10 TV news that eight people had been arrested and that authorities had found "flammable materials and liquids poured in certain areas," a find that pointed to arson. He said arson was suspected in about half of the fires.
Israeli media said the Shin Bet internal security agency was helping search for perpetrators, while Erdan said, "we need to be prepared for a new type of terror."
"It's safe to assume that whoever is setting the fires isn't doing it only out of pyromania," said Israel's police chief, Roni Alsheich. "It's safe to assume that if it is arson it is politically motivated."
Ayman Odeh, the head of a joint Arab bloc of parties in Israel's parliament and a Haifa native, appealed to Israelis to come together and abandon "politics" during the trying time.
"This is something that harms all of us. This is not a story of Arab or Jew. Whoever did this is an enemy of all of us," he told Israeli Channel 2 TV news.
The Palestinians meanwhile offered to send firefighting teams to help combat the flames, according to the official Palestinian news agency WAFA. Yousef Nassar, the director general of the Palestinian Civil Defense, said the offer of assistance was "a humanitarian message."
The Palestinians assisted Israel during a deadly wildfire in 2010. Israel's response to the offer was not immediately known.
The rash of fires is the worst since 2010, when Israel suffered the single deadliest wildfire in its history. That blaze burned out of control for four days, killed 42 people and was extinguished only after firefighting aircraft arrived from as far away as the United States.
Israel has strengthened its firefighting capabilities since then, buying special planes that can drop large quantities of water.
Several countries, including Russia, France, Cyprus, Turkey, Croatia, Greece and Italy also were sending assistance to battle this week's blazes.
Yael Hamer, a resident of Haifa who was evacuated from her home Thursday, told journalists that the situation now was worse than the fire six years ago, when the fire was contained to the forests next to Haifa.
"Now it is residential areas where there are many private homes. It is near schools, gas stations, and there are a lot of cars that are stuck in traffic jams as people try to leave Haifa," Hamer said.
Residents of eight neighborhoods were told to evacuate their homes Thursday afternoon, police spokesman Micky Rosenfeld said. Or Doron, a spokesman for the city of Haifa, said some 50,000 people had been evacuated.
Police and firefighters were deployed throughout the city, as people loaded up supermarket carts with belongings and fled their homes. Some people connected hoses together from apartment buildings to help battle the fires, while residents held cloths over their faces.
The military said it deployed two search-and-rescue battalions to assist civilian efforts. It also called up about 500 reserve soldiers to back up the police and fire departments.
Police said the blazes started early Tuesday at Neve Shalom, a community outside Jerusalem where Jews and Arabs live together. Fires later flared up elsewhere near Jerusalem and in the northern Israeli area of Zichron Yaakov.
Information for this article was contributed by Ruth Eglash of The Washington Post.
A Section on 11/25/2016