Gambling technology provider Playtech saw its shares tumble after issuing another warning about its black-market Asian operations.

On Monday, Playtech issued a trading update covering the first six months of 2018, stating that its performance was “broadly in line” with the results from the same period last year. Average revenue excluding Asian markets is up 7% year-on-year.

However, looking at the way H2 2018 has started, the company warned that the current run rate in Asia was “materially below” both the H2 2017 average and the average expected for H2 2018 at the start of this year.

Playtech said average daily revenue in Asia has suffered from “a particularly aggressive pricing environment from new entrants” to the Asian market. Playtech has been forced to take steps to “protect Playtech’s position in the region and to drive revenue generation.”