A gunman kills seven people in Ukraine's Zhytomyr Oblast after a drunken quarrel during a fishing trip. The perpetrator is arrested afterwards.
Nine people are killed and five others injured in two mass shootings at shisha bars in Hanau, Hesse, Germany. The attacker also kills his mother and then himself in their apartment. He expressed far-right views in a letter of confession and video.
A soldier opens fire in a military camp and a shopping center in Nakhon Ratchasima, Thailand, killing 29 people and injuring 58 others before being shot dead by police the next day. It is considered the deadliest mass shooting in the country's history.
Ukraine's domestic intelligence service, the SBU, reports that the March 2017 explosions at Balakliia military base in Eastern Ukraine were caused by a drone carrying a ZMG-1 thermite grenade. The explosions resulted in 1 death and 5 injuries.
A rally of war veterans in Kiev calls for Ukraine to abandon the Minsk II ceasefire agreement and to declare war on pro-Russian separatists in the Donbass region. Despite two ceasefire agreements since September, combat operations, including the use of heavy artillery and ballistic missiles, never stopped.