U2, led by Bono, will perform in Honolulu after a set of shows in Australia.

The stadium has been reserved for April 7, 8 and 9, allowing for set-up, a single concert, and break-down, said a source close to the deal, who asked not to be named because the source is not authorized to make an announcement.

As many as 60,000 could be accommodated for an April 8 show. The concert promoters may sell general admission tickets, at about $50, for the grass zone closest to the Aloha Stadium stage, with higher-priced reserved tickets in the fixed seats in the stands.

Clear Channel Entertainment is promoting U2's U.S. playdates, and the Irish band has been breaking box office records on its current tour.

Three Honolulu Clear Channel stations, KSSK-FM (590), KSSK-FM (92.3) and KUCD-FM (101.9), have been informing listeners that they will announce details of a major concert event on Monday, but station officials could not confirm the concert details.

A week earlier, the Steve Miller Band and War, as well as the Honolulu Symphony and other Mainland and local acts, are slated to perform at a Diamond Head Crater Celebration, from 2 to 8 p.m. April 1 inside Diamond Head Crater. Ron Gibson, chief executive officer of the Diamond Head Crater Festival and Conference, is in town to firm up plans.

The event will be limited to 7,500 ticketholders, who would be shuttled into the crater by bus from designated parking sites. It will be the first public event inside the Waikiki landmark since 1988, when Tina Turner performed in a private show, and would give the first event inside the crater reaching from day into the evening.

In the 1970s and '80s, a New Year's Day Sunshine Festival concert was occasionally held in the crater. In this 2006 reincarnation, Gibson said he hopes to sign up alumni of past concerts for performances. Past performers include Santana, Linda Ronstadt and Boz Scaggs.

Gibson said he plans to make a formal announcement about the Crater Celebration on Jan. 18, with tickets going on sale Jan. 28. A Web site, www.cratercelebration.com, has been set up, and prospective show-goers can sign on to receive e-mail updates. A hotline, 735-7000, is also in service.