KURDISH GUERILLAS KILLED FOUR TURKISH SOLDIERS IN AN OVERNIGHT CLASH NEAR THE IRAQI BORDER, AUTHORITIES SAID SATURDAY. A KURDISH GUERRILLA WAS ALSO KILLED. THE CLASH OCCURRED ON MT. KUPELI IN SOUTHEASTERN SIRNAK PROVINCE, THE GOVERNOR'S OFFICE IN SIRNAK ANNOUNCED. THE KURDISTAN WORKERS PARTY, OR PKK, HAS BEEN BATTLING FOR AUTONOMY FOR MORE THAN TWO DECADES IN TURKEY'S SOUTHEAST. THE CLASHES HAVE KILLED SOME 37,000 PEOPLE SINCE 1984, THE ASSOCIATED PRESS REPORTED.