Bacterial powder that sparked a terror alert when it was sent to the Indonesian Embassy was probably harmless, police reported Thursday. Prime Minister John Howard said he suspects the powder was sent in retaliation over last week's conviction of an Australian woman in Indonesia on drug smuggling charges. Her 20-year prison sentence drew public outrage at home. "This is a reckless, evil act," Howard told Parliament.Howard said Friday he did not think harm had been done to the fragile bilateral relationship between the countries. "As things settle down, I wouldn't expect there will be long-term damage but it is a difficult relationship," Howard told Melbourne radio 3AW. Indonesian Vice President Jusuf Kalla has said he was satisfied with an apology from Howard over the incident, and did not think it would harm ties.