Turkish President Abdullah Gul said Friday UN team investigating allegations on use of chemical weapons in Syria must be given immediate access to the area with no obstacles. Gul said killing more than 1,000 people in Syria with chemical weapons is a very big crime against humanity. \"Those who massacred people in Syria will be cursed and will certainly be punished when the time comes,\" Gul said. He called on the international community to take concrete steps not to experience \"such pains again.\" At least 1,300 were killed in a chemical weapons attack staged by the Syrian regime in the suburbs of the Ghouta region near Damascus in the early hours of Wednesday, which the Syrian government strongly denies weapons attack near Damascus.