Police in Pakistan are hunting for the people who shot and injured members of the Sri Lankan cricket team.
Eight people were killed in the attack, which is thought to have been carried out by around 12 armed attackers. All the cricketers survived.
No-one knows who the gunmen were or why they decided to target the cricketers. So far no-one has been arrested.
Sri Lanka were on their way to the cricket ground to continue playing a match with Pakistan when it happened.
Thilan Samaraweera was shot in the thigh in the attack
The second Test has now been cancelled and the unhurt members of the Sri Lankan team have been evacuated after their president, Mahinda Rajapakse, condemned the attack as "cowardly".
The injured Sri Lankan players are Thilan Samaraweera, Ajantha Mendis, Tharanga Paranavitana, Kumar Sangakkara and Thilan Thushara.
Samaraweera is in hospital after being shot in the thigh, but none of the players' injuries are said to be life-threatening.
The attack has raised fresh questions about the immediate future of international cricket in Pakistan.
India and Australia have both pulled out of cricket tours there in the past because of security concerns.
India's latest withdrawal came after almost 200 people were killed in India after gunmen attacked seven places in the city of Mumbai in November.
India blamed the attacks on Pakistan-based militants, but Pakistan denied any involvement in the attacks.