NEW : Nine people are arrested , Lebanon 's interior minister says . The Lebanese government has said it will investigate the incident and take legal action against those responsible for the attack on a Shiite Muslim shrine in Beirut's southern suburbs that killed at least 21 people. It is not clear if a ransom was paid . The cyclists are in good health , the army says .
NEW : Nine people are arrested , Lebanon 's interior minister says . Estonian FM : The main thing is to get them home now . It is not clear if a ransom was paid . The cyclists are in good health , the army says .