Ban demanded once again that the UN Security Council refer Syria to the International Criminal Court so that the tribunal based in The Hague can open up investigations of possible war crimes.
"Those responsible for yesterday's seemingly calculated attack against civilians in the camp in Idlib, which could constitute a war crime, must be held accountable," said Ban's spokesman.
Women and children were reported to be among 28 civilians killed in the raids near the Turkish border, which also wounded 50.
UN spokesman Stephane Dujarric said it was "difficult to believe" that the air strikes were "a mistake", adding that there needs to be further investigation to determine who is responsible.
The United Nations is working with its partners on the ground to collect information about the attack, said the spokesman, adding that countries that "have military assets should also take a look" at what happened.
Both Syria and Russia denied that the camp had been hit by an air strike and suggested that rebels could have shelled the site.
Ban has said that the starvation sieges and hospital attacks during Syria's five-year conflict are war crimes and that the ICC should put those responsible on trial.
Syria's conflict erupted in 2011 after anti-government protests were put down. Fighting quickly escalated into a multi-faceted war that has killed more than 270,000 people and forced millions from their homes.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
