Barcelona's players and coaching staff held a minute's silence before training on Friday in tribute to the victims of the terror attack in the city.
At least 13 people died and dozens were injured on Thursday when a van ploughed into pedestrians in Barcelona's busy tourist area of Las Ramblas.
Barca had already confirmed that players of all their teams would wear black armbands during games this weekend - the senior side begin their LaLiga campaign against Real Betis at the Nou Camp on Sunday - while a minute's silence will be held at matches across Spain.
#TotsSomBarcelona pic.twitter.com/c8cU3clVin
— FC Barcelona (@FCBarcelona) August 18, 2017
Very shocked for what happened in Barcelona. All my support to the city and families! pic.twitter.com/YDtyAiw7Qc
— Luis Suárez (@LuisSuarez9) August 17, 2017
The Catalan club also showed their support for those affected by the attack on Friday morning, with players and staff standing in a semi-circle at the club's training ground while holding a minute's silence.
Barca tweeted a short video of the tribute along with the TotsSomBarcelona (we are all Barcelona) hashtag.
Other Spanish clubs held tributes of their own before training on Friday.
Barcelona-based Espanyol published photographs of their squad linking arms in a circle to pay their respects ahead of Saturday's trip to Sevilla.
Spanish and European champions Real Madrid also tweeted a picture of their first-team squad holding a minute's silence at Valdebebas, with the likes of newly promoted Catalan club Girona, Granada, Levante and Real Mallorca posting similar images of their players and staff on their accounts.
Many clubs across Spain had already tweeted their support for Barcelona on Thursday evening.
#TotsSomBarcelona pic.twitter.com/yl2tpITrut
— FC Barcelona (@FCBarcelona) August 18, 2017