Manhattan Bancorp said late Tuesday that Chief Executive Jeffrey Watson had left the company. The South Bay-area business bank did not provide a reason for his departure.

The Los Angeles holding company for Bank of Manhattan, which opened in 2007, said Harry Chenoweth had been appointed interim CEO until a replacement for Watson could be hired. Chenoweth, a founding bank director, most recently served as president of Barrister Executive Suites Inc. and earlier as executive vice president of Imperial Bank of Los Angeles.

“We would like to thank Mr. Watson for his dedicated service to the Company and the Bank during his tenure as our president and chief executive officer,” said Chairman Kyle Ransford. “We have had great success under his leadership, growing to $150 million in assets in just over two years since our organization.”

Bank officials did not return calls for comment.