NEWARK, N.J. (AP) - Federal prosecutors say Ukrainian hackers worked with securities traders to make $30 million by breaking into the computer systems of companies that publish news releases about mergers and acquisitions.

NEWARK, N.J. (AP) Federal prosecutors say Ukrainian hackers worked with securities traders to make $30 million by breaking into the computer systems of companies that publish news releases about mergers and acquisitions.

According to an indictment unsealed Tuesday, the defendants gained access to news releases and traded on the information in them before they were made public.

Federal prosecutors in New Jersey and New York City, along with Homeland Security Secretary Jeh Johnson and Securities and Exchange Commission Chairwoman Mary Jo White will discuss the case during a news conference Tuesday in Newark, New Jersey.

An indictment against five people was unsealed in Newark on Tuesday morning and another was filed under seal in Brooklyn, New York.

The five include two people described as Ukrainian computer hackers and two securities traders from Alpharetta, Georgia.

Prosecutors allege the scheme started in February 2010.