U.S.-led airstrikes launched in Syria have reportedly killed over 500 people including civilians in a month-long campaign against the ruthless ISIS militants. According to a Syrian monitoring organization which tracks the violence, the airstrikes have killed about 553 people including 32 civilians.

The Guardian reported that the Britain-based Syrian Observatory for Human Rights (SOHR) said Thursday 553 people were killed since the airstrikes against ISIS started Sept. 23. The majority of the deaths, 464, were Islamic States fighters while 32 were civilians including 6 children and 5 women.

According to The Huffington Post, the monitoring group also said it has documented 57 deaths from the al-Nusra Front fighters which has been associated to Al-Qaida. The fighters were killed in airstrikes on the northern Syrian province of Aleppo, Deir al-Zor, Raqqa, al-Hassakah and Idlib.

Meanwhile, the United States launched further airstrikes against ISIS militants in and around Kobani, Syria on Thursday. The aerial assaults were orchestrated as the fight between Kurdish rebels and militants intensified.

As reported by CBC News, Turkish President Tayyip Erdogan said Thursday that an agreement was reached and the government is sending 200 Kurdish peshmerga fighters from Iraq through Turkey to help defend Kobani.

Reuters said a senior official in Iraq's Kurdistan region stated the peshmerga would be armed with heavier weapons than those being used by Kurdish fighters in Kobani. The official also said the fighters need armor-penetrating weapons to hold off ISIS.

Iraqi Kurdish legislators approved the sending of fighters Wednesday, marking the semi-autonomous region's first military venture into Syria's crisis.

As the U.S.-led forces continue launching airstrikes on the militants' positions, ISIS has also pressed an offensive attack in Kobani. The jihadists are keen to consolidate territorial gains in northern Syria.

The US Central Command said its forces have conducted over 135 airstrikes against ISIS insurgents in Syria that have killed hundreds of fighters.

"Combined with continued resistance to Isil [another acronym for Islamic State] on the ground, indications are that these strikes have slowed Isil advances into the city, killed hundreds of their fighters and destroyed or damaged scores of pieces of Isil combat equipment and fighting positions," central command stated.

Since mid-September, many of the ISIS fighters were killed because of the intensified airstrikes in Syria. But as the violence continues, over 200,000 people were forced to flee into neighboring Turkey.