The incident brought swift worldwide condemnation, with France and Britain demanding an emergency UN Security Council meeting and President Francois Hollande denouncing a "massacre".
Warplanes later struck near a medical point where victims of the attack were receiving treatment, the Observatory and civil defense workers said.
March 19, 2013: The Syrian government and opposition trade accusations over a gas attack that killed some 26 people, including more than a dozen government soldiers, in the town of Khan al-Assal in northern Syria.
UPDATED 7.57AM A suspected Syrian government chemical attack has killed scores of people, including children, in the northwestern province of Idlib. "Like in 2013, Bashar al-Assad counts on the complicity of his allies to act with impunity", Hollande said in a statement on Tuesday.
Worldwide law prohibits chemical attacks.
"The regime has been systematically using small scale (chemical) attacks over a long time in order to normalize the use of those attacks", said Haid, an associate fellow at Chatham House.
"The toll continues to increase as do the strikes in the Idlib region as well as non-chemical attacks in Hama", the group said.
"What we have understood, it was a chemical attack and it came from the air", de Mistura told reporters in Brussels, adding that there should be a "clear identification of responsibilities and accountability".
The attack came just ahead of the opening of a planned global meeting of United Nations members, European Union members and some financial institutions throughout the world to discuss the current state and future of Syria.
A reporter congratulated Rafael Nadal on a win after he lost
Elena Vesnina won Indian Wells and Johanna Konta won Key Biscayne, and for both players, it was the biggest title of her career. Meanwhile, Federer is slated to miss the clay-court season and participate only at Roland Garros before the Wimbledon.
Tuesday s attack cast new doubt on the peace process, said the opposition s chief negotiator Mohamad Sabra.
Claims of chemical weapons attacks, particularly the use of the chlorine agent, are not uncommon in Syria's conflict.
"If this were to be proved to have been committed by the Assad regime, then it would be another reason to think they are an absolutely heinous outfit, that is, it is a war crime", Johnson said.
The Syrian government did not immediately comment on the allegations, but last week said claims the government was using chemical weapons were "devoid of truth".
The Britain-based monitoring group was unable to confirm the nature of the substance, and said it was unclear if the planes involved in the attack were Syrian or those of government ally Russian Federation.
France's foreign minister is calling for an emergency U.N. Security Council meeting over a suspected chemical attack in Syria's rebel-held Idlib province.
Meanwhile, the Idlib Media Center said dozens of people had been killed.
However, the airstrike that took place this morning in Idlib claiming dozens of lives utilized sarin nerve gas: a lethal gas that has been defined by the United Nations as a weapon of mass destruction and has been prohibited for use and collection by the Chemical Weapons Convention. Obama opted against a military response and instead for a negotiated deal in which Syria surrendered its chemical weapon stockpile, a move that was heavily criticized by conservatives and others.
The worldwide inquiry found Syrian government forces were responsible for three chlorine gas attacks and that Islamic State militants had used mustard gas.
The doctor, who can not be named for security reasons, said tests were needed to identify if sarin gas was to blame.
According to their observations and findings, the stock could provide a high EPS of $0.81/share and a Low EPS of $0.74/share. Our thanks to investment research platform Seeking Alpha for the transcriptions from BlackBerry's March 31 Q4 earnings call.
Certainly, sticking with the same old story and characters hasn't made things any more interesting for Iron Fist. In the wake of Iron Fist's massive misfire and many issues coming to light now, it's getting even more attention.
Bioware has come with a new bunch of details on the Mass Effect: Andromeda which has a mix of both good and bad elements. BioWare also promised additional patches and regular support in the next two months to cover additional in-game issues.
The bucket truck effort alone on Wednesday netted 26 violators of which 14 were for distracted driving and several for seatbelts. If you get caught with your cell phone to your ear or texting, you could face a $136 fine.
"We need to reduce the total jail population to 5,000 over the next 10 years to totally close Rikers Island", de Blasio said . Any talk of getting off Rikers is meaningless if we don't keep reducing crime.
Of course, as with all rumours, we'd advise that you take this with a large sprinkling of that proverbial salt. According to several sources Microsoft is set to unveil some Project Scorpio-related news this week.
But one such pursuit ended tragically when three men were killed as their vehicles collided at a rural crossroads. For years, CNN and other national news networks have purchased tornado videos shot by freelance storm chasers.
Police have since moved the girl and her family to a " safe space " after she was getting taunted and threatened. Following the assault, the victim received harassing messages on social media, causing the victim more distress.
In recent times, there have been reported incidents of unruly behaviour by the fliers onboard various airlines. The lawmaker boarded the flight but refused to alight from the aircraft when it landed at IGI airport here.
According to Autism Society of Alabama, more than 50,000 Alabamians are now affected by autism spectrum disorders and there is no cure.
AOL plus Yahoo to equal new 'Oath'
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Ralph Lauren to shut down Fifth Avenue Polo store
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Jim Ross Signs With WWE For Two Years
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Dishonored 2 to get Free Trial This Week
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Rob Gronkowski invades the ring as WrestleMania
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