In the first advance since announcing plans last week to retake all of the divided city, pro-government troops seized the Farafira district northwest of Aleppo’s historic citadel, a military source told AFP.
“After neutralising many terrorists… units are now demining the area,” the source said.
The push follows several days of Syrian and Russian air strikes on rebel-held Aleppo neighbourhoods — some of the fiercest bombardment of the five-year conflict so far — after a ceasefire deal brokered by Moscow and Washington collapsed last week.
The Aleppo maelstrom prompted Western powers to accuse Russia of committing possible war crimes, charges the Kremlin condemned as “unacceptable”.
In the latest broadside, NATO Secretary General Jens Stoltenberg also condemned the air campaign.
“The appalling attacks on Aleppo have shaken all of us, and the violence and the attacks we have seen… is morally totally unacceptable and is a blatant violation of international law,” Stoltenberg told a news conference in Bratislava.
On the ground in eastern Aleppo, an AFP correspondent said air strikes struck several neighbourhoods simultaneously, including in Al-Shaar, where a five-storey building was levelled with a family stuck inside.
One young girl, her body encased in rubble, was among the dead. Her father, in shock as rescue workers picked up her lifeless body, collapsed beside her, saying: “She’s just sleeping. She’s just used to sleeping.”
The Syrian Observatory for Human Rights, a Britain-based monitor, said that more than 165 people have been killed by Russian and regime bombardment on the city since the government announced its offensive last week.
At least 23 civilians, including nine children, were killed Tuesday in raids on the neighbourhoods of Al-Shaar and Al-Mashhad, it said.
As well as the intensified violence, residents have been left reeling from food shortages and skyrocketing prices.
The World Health Organization warned that medical facilities in east Aleppo were on the verge of “complete destruction”.
“Over the last weekend alone, more than 200 people were injured and taken to understaffed health facilities in east Aleppo,” a spokeswoman said in Geneva.
The UN body called for “an immediate establishment of humanitarian routes to evacuate sick and wounded from the eastern part of the city.”