Sprint Corp. says it has cut 452 jobs from its Overland Park headquarters as part of a previously announced cost-cutting effort.

The Kansas City Star reports that the layoffs were disclosed Friday in a notice that the nation’s third-biggest cellphone carrier filed with the Kansas Department of Commerce. The report doesn’t cover any job losses outside the headquarters campus, although they are believed to be happening too.

The company said earlier this month in a filing with the Securities and Exchange Commission that it was cutting an unspecified number of jobs to reduce costs. The filing said the company would book a $160 million charge in its fiscal second quarter to cover this round of layoffs.

Another 477 Sprint employees in Overland Park were laid off earlier this year.