Mesa's city manager has upheld the firing of a gang detective who internal affairs investigators said had sex with a prostitute and then lied about it.
City Manager Chris Brady's decision came Feb. 12 after an appeals board recommended Dec. 5 that allegations against Adam Biermann of conduct unbecoming a member and untruthfulness not be sustained.
Mesa police fired Biermann Sept. 7 on the basis of an internal affairs investigation, but the Personnel Appeals Board recommended the reversal, saying in a letter that investigators didn't prove their case.
Brady wrote in a Feb. 12 letter to Biermann's attorney that the investigation was "thorough and credible."
Biermann's downfall began April 26, 2006, when he stopped a prostitute and questioned her on Main Street, according to the internal affairs report.
He didn't check her for warrants or inform dispatchers of the stop.
They agreed they discussed her prostitution and a pimp who was harassing hookers, then they exchanged phone numbers and she went on her way.
The woman reported that he called her later and asked to stop by her room at the Rawls Motel, 1310 W. Main St. The woman said she had assumed he wanted to discuss the pimp, but that he asked for sex when he arrived.
The woman, whose name is redacted from the report, said she was willing to charge half price, but he wanted free sex as a favor for letting her go earlier.
Investigators used surveillance footage from the Wal-Mart across the street from the motel, Biermann's police radio records and telephone records to support their case.
A grainy video shows an SUV like the one Biermann drove that night arriving at the motel at the same time that he checked out with dispatchers and turned off his radio.
Phone records also show he placed a call to her about that time.
The video shows a person leaving her room and returning to the SUV just before Biermann switched his radio on again.
Biermann produced a receipt for a Red Bull from a Tempe hookah bar time-stamped in the period when police allege he had sex with the prostitute.
Investigators later discovered that he knew the owner of the hookah bar.
Biermann also produced video surveillance footage of his arrival at his home time-stamped 27 minutes after the SUV left the motel. Biermann contended that he couldn't have driven home in that time, but investigators made the drive in 24 minutes.