ALFRED, Maine (AP) — A Maine judge says she's not going to let prosecutors introduce almost 600 sexually explicit images at the trial of a man charged with helping a fitness instructor run a prostitution business from her Zumba studio.

But Judge Nancy Mills said Wednesday she will allow prosecutors to show jurors in the trial of Mark Strong Sr. some of the images, but not all 577 of them. He's on trial on charges of promoting prostitution.

The defense says Strong had an affair with Alexis Wright and helped her launch her dance studio in Kennebunk by co-signing for her lease but knew nothing about allegations of prostitution.

Prosecutors say the images show Strong knew about the prostitution.

Both Strong and Wright have pleaded not guilty. She'll be tried later.

Meanwhile, a detective is testifying Wednesday about text messages.