A woman was knocked to the floor of her home during an attack in Ashton-on-Ribble.
Preston Police have released the image of a man they want to speak to following the attack on Monday (25 June).
At 12.15pm a woman in her 50s suffered injuries to her face during the assault at her home.
It is believed she, and her attacker, knew each other.
Paul Hope, 39, from Preston, is wanted in connection with the incident.
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A spokesman for Lancashire Police said: “This was an unpleasant attack which left the woman shaken and needing hospital treatment.
“We need to speak to Paul Hope and ask if anyone has seen him or knows where he is, please contact us.”
Anyone with information can contact police on 01772 209746 or if they fail to get an answer, 101, quoting log reference 635 of June 25th.
Alternatively, you can contact Crimestoppers anonymously on 0800 555 111 or online at Crimestoppers-uk.org.