A Portuguese man whose car was targeted in a pipe bomb attack in Londonderry has said it left his young children were left "terrified".
The device was thrown through the window of Jose Santos' car in Cromore Gardens in Creggan on Sunday night.
Up to 30 houses were evacuated while army technical officers examined the object.
Mr Santos said he had no idea why he was targeted.
"Nobody has anything against me. I have no words to try and explain why I was targeted, because I am not involved," he said.
"I am completely and totally clean. I have my young children in the house, and they were terrified."
PSNI Inspector Trevor McKeown said they were still trying to establish a motive for the attack.
He said that the police who attended the scene were attacked twice.
"Whenever police arrived to commence our investigation there were a few young people throwing stones, but a lot of responsible, mature people trying to get those people on site.
"It was later on, after midnight, that a young crowd came back again and we could see more mature adults in that crowd actually directing the young people," he said.
Inspector McKeown appealed to anyone who saw any suspicious activity in the area before 2145 GMT on Sunday to contact police.
Sinn Fein councillor Kevin Campbell said the attack showed a "total disregard" for the local community.
"It is an absolute disgrace that 30 families were forced to leave their homes because of this incident.
"I would call upon anyone involved in this type of activity to desist."
SDLP councillor Jim Clifford said all such attacks should be "totally and absolutely condemned".
"It is no thanks to those who carried out this attack that we are not dealing with a serious injury or worse.
"We don't need this and we don't want this."
A 17-year-old male was charged with offences connected to disorderly behaviour and breaching a cordon.
He is expected to appear in court at a later date.