There is provided a method for cell search in a communications network. The method is performed by a wireless terminal. The method comprises detecting a level of energy received in a frequency interval to be higher than a threshold value. The method comprises acquiring auxiliary information regarding available cells in the frequency interval based on frequency location and width of the frequency interval. The method comprises performing a cell search in at least a sub-band of the frequency interval using the auxiliary information. There is also presented a wireless terminal configured to perform such a method, a computer program, and a computer program product for such a method.