A fan of Liam Payne exclusively tells PEOPLE that she had a few interactions with him leading up to the One Direction member's death, and there was "nothing strange or unusual" about his behavior.

Liam Payne shared what would be his last photos with his former One Direction bandmate Niall Horan two weeks before his death, when they reunited at Niall’s concert in Argentina.

Niall Horan looked somber as he stepped out in London on Thursday in his first sighting since his former One Direction co-star Liam Payne's death. The 31-year-old Irish singer-songwriter was photographed walking his dog alongside his girlfriend,