U.S. District Judge Vanessa Gilmore sent the jurors back for more deliberations, with instructions to report back to her later Wednesday. The panel is in its fourth full day of deliberations in the 14-week case.

Broadband unit CEO Joseph Hirko, top strategist Scott Yeager, software engineer Rex Shelby, finance chief Kevin Howard and in-house accountant Michael Krautz face lengthy prison terms if convicted.

The five are accused of a pair of schemes prosecutors said improperly inflated the value of Enron stock by touting the capabilities and successes of the company's broadband unit to financial analysts and investors at a conference in 2000. In reality the operation was attracting few customers and no profits, Justice Department lawyers said.

They're charged with conspiracy to commit wire and securities fraud. In testimony, all denied any wrongdoing.

There are 164 counts covering the five defendants. Some of the counts have multiple defendants, meaning jurors were asked to make 192 verdicts.

After quizzing each of the jurors individually, with each of them responding they were deadlocked, Gilmore urged them to deliberate through the end of the day. Over the previous three full days of deliberations, the panel had left at 4 p.m. CDT. She asked they remain another hour Wednesday.

Outside their presence, Gilmore told lawyers she believed the panel had not deliberated long enough, given the length of the case.

Earlier Wednesday, jurors sent out a note asking what would happen if they could not reach a unanimous verdict on all the counts against the five men.

Gilmore sent back a note referring to a page in the 60 pages of instructions she read them last week when she gave them the case. If they did not have a unanimous verdict on any of counts, they should not fill out an answer for that particular count on the jury form, she said.

Yeager was named in 115 counts, all but six involving money laundering and insider trading. Hirko and Shelby are accused of similar charges. Prosecutors contended the trio conspired with the others to lie about Enron's broadband network and operating software so they could get rich from selling stock inflated by the hype.

Howard and Krautz are accused of manufacturing $111 million in earnings from a failed video-on-demand deal to minimize reported losses.

-- Michael Graczyk (Associated Press Writer)