Agartala June 14 (IANS): Unable to afford costly treatment for their six-month-old daughter a daily-wage labourer and his wife strangled her to death and dumped her body in a ditch near their home Tripura Police said on Friday. Police Thursday arrested Laba Debnath 53 the father of the ill-fated child who confessed that he and his wife killed their baby girl Lina and later dumped her in a ditch near their Teliamura home in west Tripura 55 km northeast of the state capital. A police official quoting the girl's father said: ‘The baby had tetanus and also suffered a haemorrhage.