At least six Nato servicemen, 10 Afghan civilians and two policemen have been killed in a suicide attack in Afghanistan's Parwan province, police said.
No one immediately claimed responsibility for the attack and no other details were available.
The Naro-led international force in Afghanistan has not yet commented.
More top news
Mladic, now 75, was the military commander of Bosnian Serb forces in the 1990s, who fought against the Bosnian Croat and Bosniak armies.
Weather: Heavy rain and strong winds in the north
His representatives said Cassidy, who was hospitalised last week, died "surrounded by those he loved."