A man punched a hole in a glass panel, injuring an immigration officer, after becoming upset during an inquiry over requirements for an identity form. The incident happened yesterday morning at the Immigration Department's West Kowloon office in Shanghai Street, Yau Ma Tei, where the man had gone for a form to certify a child's identity. A department spokesman said the 27-year-old man became angry after hearing the replies to his questions and smashed the glass panel between him and the officer. The man injured his hand, while the officer, 26, suffered minor cuts. Both were treated at Queen Elizabeth Hospital. Police later arrested the man on suspicion of causing criminal damage. He was freed on police bail. The man had apparently checked the Immigration Department's website before his visit to make sure he had brought along the required information. The 'Form for Countersignature' he was seeking is designed to certify the identity of children aged under 11. Parents need to submit the form, with the signature of a person not related to the child, to the department if they want to apply for a travel document for their children.