A postmortem will held today on a 19-year-old man who was shot dead in Clapton on Saturday.
A second man was also hurt in the attack but is in a stable condition.
No arrests have yet been made and the police are appealing for any information.
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The mayoral candidate said he believed the spike in knife crime and the restrictions imposed on police to stop and search are linked.
Dragos Moisica raped the victim on her 12th birthday in a hotel in Kenton. He has been jailed for 12 years.
A week after the sinkhole appeared, it is unclear when the area will be declared safe.