Software vendor Verint Systems Inc. Wednesday posted a 21.9 percent revenue increase for the fourth quarter and increased its financial forecast for the fiscal year ending Jan. 31, 2016.

While revenue climbed to $311.7 million, diluted earnings per share fell to 7 cents on net income of $6.5 million. That compared to diluted earnings per share of 42 cents on net income of $22.9 million in the year ago quarter. The decrease in earnings was attributable in part to income tax adjustments.

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The Melville company, whose software is used by government agencies and customer call centers to monitor telecommunications, raised its revenue forecast to a range of $1.2 billion to $1.25 billion for the fiscal year ending Jan. 31, 2016. Diluted earnings per share are expected to be $3.55 to $3.75.

"We're targeting another year of double-digit revenue growth," CEO Dan Bodner said in a conference call after the market closed.

Bodner also announced that the company was entering the corporate market for cybersecurity software later in the year.

Shares of Verint fell more than 1 percent to close at $58.62 Wednesday and showed continued weakness in after-hours trading.