The farmer, identified only as Mallesh, a native of Jogulamba Gadwal district, reached the Camp Office at around 10.30 am and swallowed a poisonous substance, they said.
He was apparently disturbed over financial problems, the police said.
He started vomiting which was noticed by police personnel posted there. They shifted the agriculturist to a hospital, where his health condition was stated to be stable, Punjagutta Police Station Inspector S Ravinder said.
No case has been registered, the police said.