Roughly 60 people were detained and tortured for 20 days by Turkish police after the killing of two Turkish policemen in Cizre on 13 January 1989. The economy of Cizre was severely disrupted by the eruption of the Gulf War as trade with Iraq was embargoed and the border was closed, resulting in the closure of 90% of shops in the city. Kurdish militants clashed with Turkish security forces in Cizre on 18 June 1991, and five Turkish soldiers and one militant were killed, according to official reports, however Amnesty International reported the death of one civilian also. On 21 March 1992, a pro-PKK demonstration to celebrate Nowruz in contravention of a state ban was dispersed by Turkish soldiers, and led to violence as Kurdish militants retaliated, resulting in the death of 26-30 people. Properties in Cizre were damaged by Turkish soldiers in two shootouts against PKK militants in August and September 1993, and three militants were killed.