The U.S. space agency says it will not try again to launch the shuttle Discovery until late next week, as engineers struggle to fix an equipment malfunction.

A NASA spokesman says officials are due to meet Friday to discuss their plans and ongoing repair work.

Engineers say they have yet to solve the problem behind a faulty fuel sensor that forced a delay in Wednesday's planned launch.

NASA hopes to launch the Discovery before the end of July, otherwise the flight will be pushed back until September.

The seven-member crew of the Discovery will conduct the first shuttle launch since the Columbia disaster in 2003.

Some information for this report provided by AFP, AP and Reuters.