[2] Starting in 1998, the KLA was involved in frontal battle, with increasing numbers of Yugoslav security forces.
[3][4][5] The failure of the talks at Rambouillet resulted in a NATO air campaign against the Federal Republic of Yugoslavia lasting from 24 March to 10 June[6] when the Yugoslav authorities signed a military technical agreement.
[10] The 848,000 Albanians who were displaced from their homes during the war quickly returned as about 230,000 Serbs, Roma and other non-Albanians were forcibly cleansed from Kosovo or fled it in fear of retaliatory attacks.
KLA officials condemned some of the attacks while Albanian media organizations attempted to justify them, calling the churches "symbols of Serbian fascism."
On 6 June, a grenade was thrown at a crowd of ethnic Serbs waiting for a bus in the town square of Gračanica, injuring three people, which was followed by some civil unrest.
[17] A remote-controlled bomb exploded in its vicinity at noon on 16 February 2001 as it passed through the Albanian-populated town of Podujevë while returning from Niš to the Serbian enclave in Gračanica.
[19][20] The Serbs were travelling to visit family graves in Gračanica on the Orthodox Christian Day of the Dead.
[17] KFOR had received advance warning of the attack and conducted a thorough search of the bus route but did not uncover any explosive devices.
Two wounded Serbs died en route to the hospital and the body parts of two others were found amongst the debris of the bus.
Serbs in the enclave of Čaglavica blocked the road leading to Macedonia and pulled ethnic Albanians out of their cars and assaulted them.
One Albanian, Florim Ejupi, was convicted in 2008 of planting the bomb and sentenced to 40 years in prison.