The SDLP leader of Derry City Council, Pat Ramsey, has claimed he was the target of a suspect device thrown at his neighbour's house.
The device was thrown at the address at Meenan Drive in the Bogside area of the city shortly before 2045 GMT on Tuesday.
It was later taken to Strand police station to be examined by Army bomb experts, who declared it to be a hoax.
Mr Ramsey blamed dissident republicans for the attack.
He was at a meeting when his wife called him to say his neighbour had found a tubular-shaped object wrapped in black tape with wires attached.
The assembly member put the device in his car and brought it to the police station.
Mr Ramsey said he believed he was targeted because he criticised petrol bomb attacks in a Protestant area of the city earlier this week.
"I was critical today of incidents that happened last night in my area when there were petrol bomb attacks on the police and on people living in the Fountain area," he said.
"That is the only reason that in any way would be a form of justification in other people's eyes for doing something like this."
Police have appealed for any witnesses to the attack to contact them.
Meanwhile, a bomb alert at Camlough in south Armagh has ended.
Residents of two houses on the Aghmachan Road were evacuated.
Army bomb experts were called to the area after the discovery of a suspicious object on Wednesday.