An internal police department investigation has cleared a detective of wrongdoing for investing in a satellite television company accused of offering broadcasts of Hezbollah propaganda.

Prosecutors say the Brooklynbased company, HDTV Corp., was under contract with Hezbollah’s television station, Al Manar, to make the channel available to viewers in America. As a result of the alleged venture, the company’s owner, Javed Iqbal of Staten Island, and a business partner were charged last year with providing material support for terrorism. Mr. Iqbal has denied broadcasting Al Manar. The prosecution is the first of its kind.

When Mr. Iqbal was arrested in August, he told FBI agents that a police detective, Alan Ferrara, was a business colleague, according to an FBI report of the arrest.

Since then, an internal affairs investigation at the NYPD has judged that an investment Mr. Ferrara made in the company did not involve the alleged contract with Hezbollah, a police spokesman said.

The company had several business ventures. HDTV Corp. offered subscriptions to several genres of programming, including Christian sermons, an Arabic channel, and pornography.

“There was a New York City police detective in fact involved in the adult pornography end of that business,” the police department’s chief spokesman, Paul Browne, told The New York Sun. “He was not connected to the terrorism aspect of it.”

“Basically I was just an investor,” Mr. Ferrara, who is assigned to Brooklyn, said in a telephone interview yesterday. “I had no involvement at all with it. That’s pretty much it.”

Mr. Ferrara said he “had no idea” of Mr. Iqbal’s alleged involvement with Al Manar.

Mr. Ferrara, by his account, met Mr. Iqbal by coincidence. Mr. Ferrara said he had a billboard advertising company that rented office space from Mr. Iqbal on Fort Hamilton Parkway in Brooklyn.

The detective “had the misfortune of renting space from an individual who, unknown to Mr. Ferrara, was involved in something the government deemed to be improper,” a lawyer for Mr. Ferrara, James Moschella, said.

Mr. Moschella said the investment was for less than “six figures,” but declined to give an exact number.

Mr. Browne said the matter of Mr. Ferrara’s investment in the pornography aspect of the business was “under review” by the department. Mr. Moschella said the content was “garden variety adult entertainment” that posed no legal issues.