Following their goalless draw on Thursday, Benfica's team bus was attacked by some of the club's own supporters, resulting in two players being taken to hospital to be treated for injuries.
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According to the Sky Sports, supporters of the Portuguese side threw objects at the squad bus following their 0-0 draw with Tondela.
Second-placed Benfica would have overtaken league leaders Porto had they won, but failed to capitalise on their rivals' loss to Famalicao on Wednesday night.
It has been claimed that supporters gathered outside the stadium after not being allowed to enter the ground for their own safety, and made their feelings known when the bus came past them.
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Two players, Julian Weigl and Andrija Zivkovic, were injured when they were hit by shrapnel after stones were pelted at the team bus.
Both midfielders were then taken to hospital to be treated for their injuries, with Benfica releasing a statement on the incident.
"Benfica denounce the criminal stoning the bus of its players was victim to," they said.
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"We guarantee total collaboration with authorities to whom we appeal for the greatest effort to be made in identifying the offenders responsible for these criminal acts."
If they are caught, what punishment do you think these fans should be hit with? Let us know in the comments section below.