The OFT said it is investigating a number of "free" web and app-based games with concerns over additional costs from add-on features.
In March, ITV News spoke to Danny Kitchen and his mother Sharon. Danny racked up a £1,700 bill in just a few minutes by unwittingly buying add-ons for a zombie game on his parents' iPad.
More top news
The Syrian city of Raqqa has been liberated from Islamic State militants, a senior commander for a US-backed force has said.
Paranoid schizophrenic Jeffrey Barry stabbed Kamil Ahmad before removing his penis in the attack at his flat in Bristol last year.
The latest addition to the royal family will be a younger brother or sister for Prince George and Princess Charlotte.