NINE Inch Nails are expected to be confirmed for the Sonisphere Festival at Knebworth tomorrow. Organisers are set to announce the fourth wave of bands for the rock event at the Hertfordshire stately home on Monday morning. Nu-metal rap group Linkin Park

NINE Inch Nails are expected to be confirmed for the Sonisphere Festival at Knebworth tomorrow.

Organisers are set to announce the fourth wave of bands for the rock event at the Hertfordshire stately home on Monday morning.

Nu-metal rap group Linkin Park and rock giants Metallica have already been confirmed as headliners of the two-day camping festival in Knebworth Park on August 1-2.

And Nine Inch Nails and good friends Jane's Addiction are the latest groups rumoured to be playing the event as well.

American industrial rockers NIN, fronted by Trent Reznor, have long been linked with the new Knebworth festival.

The Grammy winners are touring America with their Lights In The Sky show in May.

NIN will be supported there by alternative LA group Jane's Addiction, fuelling rumours that both might end up on the Sonisphere bill at Knebworth.

The two groups have already been added to the Oxegen festival that takes place near Dublin from July 10 to 12.

Australian AC/DC-like hard rockers Airbourne are another act now being linked with playing Knebworth.