All four members of One Direction have re-followed former member Zayn Malik on Twitter.
Harry Styles, Louis Tomlinson, Liam Payne and Niall Horan have sparked rumours they could be set to reunite as a band alongside Zayn - who left the group in 2015, just months before the others went on indefinite hiatus - as they have all followed their former bandmate on social media.
The reunion speculation has been further fuelled by the fact the band members have also re-followed the official One Direction account.
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If the group reunite the timing couldn't be better, as this July will mark the 10th anniversary since they were put together on UK singing competition The X Factor in 2010, where they eventually finished in third place.