Methanol found in 21 teens who died in South Africa bar

No visible injuries were found on the bodies of the dead.

Officials said on Tuesday that they're still determining if the levels of the toxic chemical in the teens' bodies were enough to kill them. 

Their deaths have shocked South Africa

Their deaths have shocked South Africa

where calls are growing for better enforcement of alcohol restrictions for children.

where calls are growing for better enforcement of alcohol restrictions for children.

According to the  Press, many of the teens may have been celebrating the end of their winter school exams.

Many of the teens, ranging in age between 13 and 17, were found dead in the tavern, 

Others died after they were rushed to nearby health facilities.