Story highlights

An attack has killed more than 30 people in the border city of Suruc

Protesters had gathered in Istanbul to show support for the victims before police moved in

Prime Minister Ahmet Davutoglu suggests ISIS is responsible

Suruc, Turkey CNN  — 

Turkish police fired tear gas and water cannon to disperse demonstrators gathered in Istanbul late Monday in the wake of one of the deadliest terrorist attacks to rock the country in years.

Several hundred protesters had gathered in Turkey’s largest city to show support for at least 31 victims of a blast that ripped through a rally earlier on Monday in the Turkish border town of Suruc.

The Turkish government is calling the explosion a suspected suicide bombing.

At least 100 others were wounded, provincial Governor Izzettin Kucuk told Turkish media.

The explosion occurred at midday at the Amara Cultural Park in Suruc, where a group had gathered calling for more help to rebuild the Syrian Kurdish city of Kobani, CNN Turk reported.

Suruc is about six miles from the border and Kobani, the Syrian city that was the scene of intense fighting between Syrian rebels and Kurdish forces and ISIS.

Photos and video from the scene show bodies strewn around a park and dazed people at the blast site while emergency teams rush to aid victims.

READ: Explosions at Turkish political rally kill at least 2, injure 100

Photos and video taken from the scene show bodies strewn around a park and dazed people at the blast site while emergency teams rush to aid victims.

“Kids were screaming, everyone was screaming and running,” eyewitness Erhan Subasi told CNN. “Everyone was in a panic but trying to help.

“People’s faces were blown off, arms scattered. … You could smell burned bodies.”

There was no immediate claim of responsibility, but Prime Minister Ahmet Davutoglu suggested ISIS was responsible for the attack.

He urged the country to unite and said the government would not hesitate in taking action in response to the bombing.

A Turkish official speaking on condition of anonymity told CNN on Monday that the government thinks the attack is “retaliation to the Turkish government’s fight against terrorism.”

Read: Offices of Kurdish party in Turkey rocked by explosion

The official called for the international anti-ISIS coalition to “more actively pursue a solution to the crisis in Syria.”

Turkish President Recep Tayyip Erdogan condemned the attack.

“Terror doesn’t have a nation, race or homeland,” he said. “That is why we have been consistent in underlining the need for a global effort to fight terror.”

CNN’s Arwa Damon and Ivan Watson also contributed to the story.