Pakistan, Sept. 8 -- Higher coal costs and concerns over Pakistan's categorisation by Morgan Stanley Capital International (MSCI) led the benchmark KSE-100 Index to a three-month low on Tuesday, even as volumes increased slightly at the Pakistan Stock Exchange (PSX).

Pakistan is expected to be reclassified from the Emerging Markets Index to Frontier Markets by MSCI on Wednesday morning.

With a final score of 46,729.96, the KSE-100 fell 188.56 points (0.40 percent). The index has fallen to its lowest level since May 27. During the first hour of trading, the benchmark KSE-100 gained 76.32 points, reaching a high of 46,994.84. However, it was once again met with resistance around the 47,000 mark.

Oil and gas exploration (39.26 points), as...