San Jose police tonight are alerting residents of a man who has admitted to crushing up Aspirin tablets and putting them in baby food at two local stores.Police Sgt. Ronnie Lopez said officers went to CityTeam Ministries, a shelter in the 1100 block of Old Bayshore Highway, at about 4:30 p.m. after receiving a call from a 29-year-old man who said he “did a bad thing.”David Conklin allegedly told officers that about two weeks ago he crushed between seven and eight tablets of Aspirin and put them in a jar of oatmeal apple flavored Gerber baby food in the Longs Drugs store near Leigh Avenue and Stokes Street. Officers went to the store and found a jar that had been tampered with and had white powder inside, Lopez said. Police removed the jar. However, Conklin allegedly told officers he also crushed between five and six Aspirin tablets about a week ago and put them in baby food at another store. Conklin told investigators it was a Walgreens store that was near a Target store and several Hispanic markets, Lopez said. Police have not determined which Walgreens store it was or confirmed that it is definitely a Walgreens store where the incident occurred. Lopez warned anyone who purchased baby food that appears to have been tampered with to immediately call police. Conklin was detained and may face a felony charge of poisoning, Lopez said.