It follows a huge row on last night's show that involved Dan and a number of other housemates.
In a bizarre argument that appeared to turn into a game of tragedy top trumps, Jemima, Charlie, Jackie, Hazel and Dan all found themselves in a slanging match over their rough lives.
We barely followed what went on, with talk death and suicide all making for a very dark episode of the show.
Dan's former bosses however were worried that the drunken row may well have seen him let slip about his work on Operation Yewtree.
Chiefs at Scotland Yard have been watching the show closely to make sure that Dan doesn't blab about any of the cases he's worked on over the past four years as part of the Child Abuse Unit.
"There’s concern they might want to question him. They’ve done it before with other housemates," a source told the Daily Star newspaper.
Meanwhile, producers on the show reportedly brought in security into the camera runs in case the argument got out of control.
A show insider told the tabloid: “This row exploded out of nowhere. They had all had a good drink. Tempers just reached boiling point and it looked like it was going to kick off.
“As soon as we saw it getting seriously heated in the house we moved the security guards into the camera run so that they could get into the house in seconds.”