The years of independence had some political violence as well. On 10 December 1998, Mansur Tagirov, Chechnya's top prosecutor, disappeared while returning to Grozny. On 21 June, the Chechen security chief and a guerrilla commander fatally shot each other in an argument. The internal violence in Chechnya peaked on 16 July 1998, when fighting broke out between Maskhadov's National Guard force led by Sulim Yamadayev (who joined pro-Moscow forces in the second war) and militants in the town of Gudermes; over 50 people were reported killed and the state of emergency was declared in Chechnya. Maskhadov proved unable to guarantee the security of the oil pipeline running across Chechnya from the Caspian Sea, and illegal oil tapping and acts of sabotage deprived his regime of crucial revenues and agitated his allies in Moscow. In 1998 and 1999, Maskhadov survived several assassination attempts, which he blamed on foreign intelligence services. Russian sources maintain that the attacks were likely to originate from within Chechnya, despite the Kremlin's difficult negotiations with Maskhadov and difference of opinion regarding the Chechen conflict. In December 1998, the Supreme Islamic court of Chechnya suspended the Chechen Parliament, asserting that it did not conform to the standards of sharia. After Vakha Arsanov, the Chechen Vice-President, defected to the opposition, Maskhadov abolished his post, leading to a power struggle. In February 1999 President Maskhadov removed legislative powers from the parliament and convened an Islamic State Council. At the same time several prominent former warlords established the Mehk-Shura, a rival Islamic government. The Shura advocated the creation of an Islamic confederation in the North Caucasus, including the Chechen, Dagestani and Ingush peoples. Second war and insurgency period On 9 August 1999, Islamist fighters from Chechnya infiltrated Russia's Dagestan region, declaring it an independent state and calling for a jihad until "all unbelievers had been driven out". This event prompted Russian intervention, and the beginning of the Second Chechen War. As more people escaped the war zones of Chechnya, President Maskhadov threatened to impose Sharia punishment on all civil servants who moved their families out of the republic. This time, however, the Russian invasion met much less resistance as during the First Chechen War. The infighting among the rival factions within Chechyna as well as the rise of radical jihadists convinced several former separatist leaders and their militias to switch sides. Aided by these defectors, the Russians took the minor cities