ELMSFORD, NY-Mack-Cali Realty Corp. has begun construction on a 33,000-sf pre-leased office/flex building at its Cross Westchester Executive Park here that will cost more than $5 million to complete.

MOUNT VERNON, NY-The Federal Energy Regulatory Commission issued a preliminary go-ahead to the controversial $700 million Millennium natural gas pipeline, which will stretch from the U.S. Canadian border through New York State and ending here.

OSSINING, NY-The Ossining Village Board reports it has reached an agreement on a revised plan with developer Cappelli Enterprises to reduce the amount of new residential units to be built as part of its $30-million waterfront redevelopment project.

WHITE PLAINS-Starwood Hotels & Resorts Worldwide, Inc., reports that it will take over management and will soon raise the Sheraton flag over the 62-unit Molokai Ranch & Lodge in Hawaii.

WHITE PLAINS-The Westchester County Industrial Development Agency has offered financial assistance to two area companies that will allow both firms to expand and relocate their operations within Westchester County.

STAMFORD, CT-In a $4-billion deal, GE Capital, a subsidiary of General Electric Co., intends to gain a position in a variety of niche commercial real estate markets with the acquisition of Security Capital Group Inc.

BUCHANAN-While some area residents voice concern over the security measures in place at the Indian Point nuclear complex here, state and federal officials have given the facility high grades for security programs in place.

SLEEPY HOLLOW, NY-The village of Sleepy Hollow, perhaps frustrated at the pace of development plans at the 99-acre former minivan assembly plant here, has decided to exercise an option to acquire the property from General Motors for $12 million.