error message.

[eluser]Unknown[/eluser]
how i can insert image in my error message?sorry for the english

Code:

public function getAllUsers($offset,$count,$search){
  
   if ($search!=''){
            
    $this->db->where("(f_name LIKE '%$search%' OR lastname LIKE '%$search%' OR m_name LIKE '%$search%' OR level LIKE
    '%$search%' OR f_name LIKE '%$search%' OR student_id LIKE '%$search%')");
            }
            
    
     $UsersQuery = $this->db->get('student',$offset,$count);
  
    if($UsersQuery->num_rows > 0){
     return $UsersQuery;
    }
    
    else{
    
     // original code return FINAL;
     $this->session->set_flashdata("message","<font class='success'>Your search did not return any results.</font>");
     redirect('cuser/displayUsers','refresh');
    }  
  }

this is my model.. how i can insert image beside of error message? help please.. need