Toronto police say they know the identity of a woman caught on video throwing a chair from an upper floor of a downtown condo building, but don't know her exact whereabouts and want her to surrender.

Police received a "significant amount of information" from the public that helped officers determine the woman's identity, Const. David Hopkinson of the Toronto Police Service said on Tuesday

He declined to release the woman's name or age, but told CBC Toronto: "We are in the midst of contacting her and giving her an opportunity to consult a lawyer and turn herself in."

Hopkinson confirmed police have spoken with the woman or someone acting as her representative.

Police believe the chair-throwing incident occurred Saturday around 10 a.m. ET at a condo in the Harbour and York streets area, which overlooks the Gardiner Expressway and Lake Shore Boulevard. It was captured on video and shared widely on social media on Monday.

The chair that was thrown over the balcony is seen fluttering in the wind as it makes it way down towards the highway. (Lisa Calderon/Facebook )

Hopkinson said two chairs, among other items, were thrown over the balcony. Police are also looking for the person who videotaped the chair throwing.

There has been outrage over the possibility the tossed objects could have injured someone or caused an accident, as the expressway is right below.

Hopkinson said he obtained a copy of the video on Sunday and police began to investigate on Monday.

The items, which police say were thrown from a "very high floor" in the building, landed in front of the entrance to the condo, police said in a news release.

Police have said the woman is wanted for a mischief investigation, but Hopkinson declined to say which charges she could be facing.

A video posted on the weekend on Facebook with the caption "good morning" shows a woman, dressed in black, taking a peek over the balcony, and then throwing a folding chair onto the Gardiner Expressway and Lake Shore Boulevard below.

On Monday, police released a photo of the woman, who they say appears to be in her 20s.

Police said the incident has prompted dozens of calls.

"People can stop calling now," Hopkinson said.