Switzerland women's national team forward Florijana Ismaili has been declared missing after a swimming accident at Lake Como in Italy, her club said on Sunday.

Ismaili, 24, has played for the BSC Young Boys women's team since 2011 and is the club's captain.

"BSC Young Boys have been informed that our player Florijana Ismaili has been missing since Saturday afternoon on Lake Como after a swimming accident," a statement on the club website said.

"Searches by the police continue. We are very concerned and have not given up the hope that everything will turn out well."

The club said they were in touch with Ismaili's family and would not provide any further information until they had received an update.