The lawsuit comes two weeks after the New Jersey Sports and Exhibition Authority voted to transfer the property's lease and development rights to the developer, and allow it to do preliminary site work.

WSJ: Jets, Giants Sue Over Mall Complex Near Their New Jersey Stadium

For years, the teams have opposed the mall being allowed to open on game days, and last year they sued Triple Five and the New Jersey Sports and Exhibition Authority, the public body that must approve the project.

WSJ: Work on delayed NJ megamall expected to resume

The teams believe a 2006 "Memorandum of Cooperation" among themselves, Triple Five and the New Jersey Sports and Exhibition Authority gives the teams the right to block changes to the project that would have an adverse effect on their business, people familiar with the teams' position said.

WSJ: Mall Plan Irks Jets, Giants

They have been busy sprucing up the area and putting in a car park, although Kai Heinze, director of the Faurschou gallery in 798, says his plans to hold an exhibition of sports-themed pictures by Andy Warhol have been held up by cultural bureaucrats who reportedly want only Chinese art to be put on display.

ECONOMIST: Art for the Olympics

Mr Marciani says the Boston explosions will be analysed extensively at the National Sports Safety and Security Conference and Exhibition this July.

BBC: Boston Marathon attack: How secure are marathons?

Among them, Detroit Electric is making its China exhibition debut this week with its electric sports cars.

FORBES: Auto Shanghai: China's Biggest Auto Show Kicks Off

In the past, exhibition events were used as a sort of trial for sports popular in the host country or those having received wider acceptance.

FORBES: Move up http://i.forbesimg.com t Move down