By Laura Mandaro
SAN FRANCISCO (MarketWatch) -- Natural gas futures relinquished earlier gains Thursday after a weekly natural gas report showed an increase in inventories in line with analysts' expectations. Natural gas for October delivery slid 6 cents for the session to $3.75 per million British thermal units. Earlier it had traded at $3.835 per million BTUs, a modest advance for the session. The Energy Information Administration said working gas in storage rose 58 billion cubic feet from the prior week. Analysts polled by Platts were expecting a net injection of 56 to 60 billion cubic feet.
