Five persons, including two children of the same family, on Tuesday committed suicide, apparently due to financial problems, at Guntakal. The Guntakal police said Sreenivasulu, railway employee, was residing in the Housing Board Colony in the town. , His wife Jayalakshmi, daughter Rajeswari, son-in-law Babu besides his two grandchildren Naveen and Yashasri committed suicide.Sreenivasulu was not at home at that time. The police said Sreenivasulu had informed them that the family members might have taken the extreme step due to financial duress, after his son-in-law suffered losses in his business. A case has been registered and investigation is on.