A passenger received a cut to the face after an object was thrown at a bus in Crawley.
Police and paramedics were called to Broadfield after the bus was struck at around 6.45pm on Sunday (October 12).
The driver called the control room to report a window had been smashed as the bus travelled along Pelham Drive.
Paramedics treated the injured female passenger at the scene.
At 8.13pm, police received another call reporting that another bus had had a window smashed in Coachman’s Drive, possibly by a baseball or similar object.
A spokesman for Sussex Police said officers were investigating a number of other incidents in the area on Sunday night, which may be linked to a group of youths who were seen in the area.
A tree was set alight and a fence was broken down in Balmoral Court and a bin cupboard was set alight near the Imperial public house around 9.20pm.
Police would like to hear from anyone who witnessed any of the incidents or who have any information about them. Please email 101@sussex.pnn.police.uk or call 101 quoting serial 1159 of 13/10. Alternatively, call the independent charity Crimestoppers anonymously on 0800 555 111.