Nextel Falls 6.1% on Warning

Mobile phone operator

Nextel Communications

(NXTL)

was down 6.1% in preopen

Island

trading.

It posted a fourth-quarter loss, including a one-time credit, of 8 cents a share, narrower than expected and up from a loss of 52 cents a year ago.

The fly in the ointment is that it also warned that its first-quarter results would be hurt by increases in operating expenses.