KARACHI (Reuters) The KSE 100-share index ended at a near 10-month low and closed an hour and a half earlier than planned following the deteriorating security situation in Karachi. Since Aug 17, nearly 100 people have been killed in Karachi in political, ethnic and gang violence that has intensified in recent months, police officials said. The KSE benchmark 100-share index closed 0.48 percent, or 51.89 points, lower at 10,842.26, its lowest close since Nov. 4, 2010. Volume was at 22.40 million shares, compared with 35.73 million shares traded on Monday. "Strike call by major political party to mourn rising violence and concerns for security situation in the city affected the sentiment in the market and attendance was thin," said Ahsan Mehanti, director at Arif Habib Investments Ltd. The MQM, which dominates politics in Karachi, called for a day of mourning to be observed on August 23. The call comes just days after leading business groups demanded the army be deployed in an attempt to quell the violence. In the currency market, the rupee closed slightly firmer at 86.90/96 to the dollar, compared with the previous day's close of 87.00/07, a record low closing. "The rupee was traded at 87.09 to the dollar today," said a currency dealer at a foreign bank, compared with a record low of 87.10 made on Monday. Dealers said they expect the currency to remain under pressure, as dollar payments are typically higher in July and August because of stronger oil demand and debt payments. Stalled payments from an International Monetary Fund (IMF) bailout programme are also negatively impacting the rupee. The IMF has criticized the Pakistan government for its patchy implementation of fiscal reforms.