“We have to defend the mandate freely given to Asiwaju Bola Tinubu because it is the right thing to do,” a supporter said.
The former Abuja minister and PDP candidate scored 525,280 to ward off an ardent challenge from ex-military chief Sadiq Abubakar, who polled 432,272.
Ademola Adeleke was elected governor on Saturday in Osun.
Authorities are yet to understand the extent of the attack on Wednesday evening, an official said.
Mr Lawan did not participate in the primary. Bashir Machina, who contested the primary and won, has been challenging the party’s determination to misappropriate his mandate.
Mr Machina said he scored 289 out of 300 votes cast by delegates at primaries and vowed not to cede his mandate to Mr Lawan or anyone else.
The former social media aide to the president has faced online ridicule since failing to clinch the House of Representatives ticket of the ruling All Progressives Congress in Kano.
Awemi Maisamari said all witnesses so far emphasised how a helicopter was used to coordinate the attack, and the details they supplied have been documented.
Ibrahim Kashim, who had been seen as a placeholder for Mr Mohammed, announced he was no longer interested in running for governor just days after winning the ticket.
Tanko Rossi Sabo, of Sanga Local Government Area, told Peoples Gazette he donated the money to his people because he felt they needed it more.